Best Cannabis Seeds For Hydroponics


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Discover the benefits that come with cultivating cannabis without soil and find out which hydro system and growing medium is right for you. Curious about the Best Hydro Weed Strains for your grow? Check out this TOP 10 Hydro Strains for a successful hydro grow! FloraFlex offers an extensive selection of hydroponic growing supplies, such as nutrients, drip irrigation kits, coconut coir, light shields, and more.

The Best Hydroponic Methods For Growing Cannabis Yourself

Soilless agriculture results in explosive growth rates and huge yields. Choosing the right hydroponic system will determine how much you’ll eventually harvest.

Be Like Water

We’ve all heard of hydroponics and the great things that can be done with it. However, choosing which type of hydroponic method to use in your individual situation can be a dilemma. That said, I’ve taken it upon myself to inform and educate you, the information-hungry grower. I’ll cover the commonly used methods, outlining the pros and cons of each. Hopefully, these lessons will rub off on you, and you’ll make the proper decision to suit your individual requirements and situation.

Your hydroponic setup can be as complicated or as simple as you like—it’s up to you. You can incorporate pumps, aerators, valves and switches, or you can fill a bucket with nutrient solution and simply pour it over your soilless growing medium. The flexibility of hydroponics is one of the main reasons it’s so effective and popular.

Individual drippers deliver liquid plant food directly to rock-wool cubes/ High Times

Peat & Perlite (Soilless Mix)

This most basic of methods uses a common planting container filled with peat moss and fortified with perlite. This method is the ultimate no-brainer, requiring little or no maintenance for the entire life cycle of your plants—you simply feed them some nutrient solution once or twice a day and watch them explode into lovely green foliage.

Perlite is required to increase the moisture-holding capacity of your growing medium. It’s cheap, commonly available and wonderfully inert, so it won’t interact with your nutrient solution to rob your pride and joy of essential nutrients.

A rockwool cube with your rooted clone or seedling is slightly buried in the pre-moistened peat and perlite. Be sure not to cover the top of the cube, just its sides and bottom. Peat is very porous, so the roots have a very airy environment to grow through, and this moist, oxygen-rich environment is exactly what they need to gain a solid footing in the growing medium. Rapid and prolific rooting is the key to future foliage growth.

While this method is great, it has the drawback of having the growing medium retain harmful salts left over by the nutrient solution. You can combat this by replacing the nutrient solution with plain, pH-balanced water every four or five days. While this leaches out a large portion of the salts near the roots, it doesn’t get rid of them—they simply migrate down to the bottom of the growing medium.

Another drawback to this method pertains to pests—an infestation of critters is extremely difficult to get rid of with the peat-and-perlite growing medium. This is because the uneven surface of the medium is rife with tiny crevices and holes, perfect sites for any critters to hide and reproduce in. If you have an infestation, you’ll actually have to replace the top inch or two of the medium to get rid of the hidden pests that take refuge there from insecticide. These moist hiding places also conceal insect eggs that can transform into the next generation of pests.

With this method, feeding plants is as easy as watering any other houseplant you may have. You can do it when you come home from work, or before bed. It’s entirely up to you—just be sure to keep the growing medium moist but not extremely wet.

Ebb & Flood

This is the method that I used to cut my teeth in hydroponics. The ebb-and-flood method uses a growing medium of pea gravel, sand or something of the like. There’s a lot of flexibility here. The idea is to allow room for the roots to grow through the medium unimpeded. I’ve heard of people using everything from their childhood marble collection to aquarium gravel. Even rocks dug up from the driveway work (if you clean them well enough).

This method can be as complex or as simple as you want it to be. The most basic setup has a growing tray filled with the medium you’ve chosen, with a hose connected to the bottom of it. The other end of the hose is connected to the bottom of a bucket, which is used as a nutrient-solution reservoir. Fill the reservoir with the nutrient solution, and then lift the reservoir higher than the top of the growing-medium tray. The nutrient solution will flow from the reservoir into the tray, flooding the growing medium. Place the reservoir on the floor and the nutrient solution will flow from the tray back into the reservoir. Simple.

The major advantage of this method is that the roots are constantly moist and highly oxygenated. The solid, heavy growing medium—I recommend pea gravel—holds the roots better than do peat and perlite. There’s also ample room between the grains of the growing medium for the roots to grow almost entirely unimpeded. They’ll waste less energy trying to plow through the medium, making an extensive early root system. This lends itself to spectacular results later on.

One drawback to this method is that the tray has to be flooded three to four times daily, religiously. If you have a job, then your plants will suffer because you won’t be able to feed them sufficiently. This is a good reason to explore automating your ebb-and-flood setup. Use a pump to fill the tray, a float switch to signal when the tray is full and an electric valve that opens to allow the nutrient solution to flow back into the reservoir. An electric timer is also a must-have for this system.

You might be scratching your head trying to figure out how to implement this. Don’t worry: There’s a clever solution to this problem. Read on.

Plants grown hydroponically experience explosive growth rates/ High Times

Aerated Solution

If you want to use the ebb-and-flood method because of all of its perks, but you’re not home during the day and you’re no good with electrical things, here’s your solution: Use the same growing tray and medium as you would with the ebb-and-flood method, but don’t use a reservoir. With this system, the reservoir is replaced with an aquarium aerator. Hoses from the aerator are snaked along the bottom of the growing tray, and then the tray is filled with your growing medium.

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The idea is to have the growing tray constantly filled with the nutrient solution (and growing medium). The aerator blows air through the perforated hoses on the bottom, keeping the nutrient solution from becoming stagnant. This process is known as aeration, and it’s what keeps the goldfish alive in your aquarium. The rising air bubbles circulate and provide a constant flow of the nutrient solution to the roots of your plants.

With a setup like this, you need only to check for critters every now and then and to replace the nutrient solution once or twice a week. It is the best solution for the working grower, providing absolutely amazing results with minimum complications. I’ve used this setup since figuring it out nine years ago, and I have absolutely no complaints. The pleasant hum of that aerator puts me to sleep at night.

Nutrient Film Technique

The nutrient film technique (NFT) is widely used in commercial operations because it is completely scalable, and it provides amazing results. You can expand your NFT system to cover acres of growing area if so inclined.

Basically, the nutrient solution constantly flows through a flat-bottomed tray or a wide, round pipe (PVC plumbing pipes work excellently for this). The solution is allowed to flow over the roots of the plant, delivering nutrients very efficiently. Because the plant roots are sitting in fast-flowing water, a large amount of oxygen is also delivered to them. Most NFT growers also aerate the nutrient solution in the reservoir to further increase its oxygen content.

No growing medium is used, so the roots expand at a phenomenal rate and amazing growth follows. Some common (legal) crops that are grown using this technique in commercial settings are tomatoes, cucumbers, peppers, zucchinis and even pumpkins.

While the advantage of this system is its phenomenal growth and infinite scalability, the foremost drawback is its complexity. To implement this technique, you need a high-flow pump, an aerator and a complicated network of piping or trays. The results are spectacular, but many feel the complexity and level of work involved aren’t worth it.

Another drawback to this method is the expense of setting it all up. The costs of a pump, aerator and assorted pipes add up quickly. It’s also very unforgiving with mistakes or oversights, which will cause headaches later on.

Roots expand quickly when misted with aerated nutrient solution/ High Times


This method is a spin-off of NFT, and the setup is almost the same. What changes, though, is the method of delivering the nutrient solution. Instead of having it flow over the roots, the solution is blown on the roots in a fine mist via a special nozzle, much like the fuel injector on your car. This method is still quasi-experimental, and it isn’t used very often. A major consideration is cost. Another factor is that no way (so far) has been found to keep the nozzles from getting clogged due to nutrient crystallization.


Aquaponics sounds like a no-brainer, but it’s actually the most involved way to grow hydroponically. It is a natural hydroponic method, using next to no processed chemicals. I’m mentioning it here only to be complete, though, as you wouldn’t actually use it in practice to grow your grass.

Basically, a crop is grown in a hydroponic solution (a growing medium is optional).

The nutrients for the solution are obtained by natural means, such as harvesting the effluent from a fish tank (an extremely rich source of the constituents used in regular, nonnatural hydroponics). The system has the benefit of being almost self-sustainable, but it’s extremely involved and labor-intensive to set up and maintain.

I highly doubt that marijuana has ever been or will be grown using this type of setup, but I felt I should mention it anyway.

Some Considerations

While cost is always something to keep in mind, your skill level as a grower is also something that you must consider. First-time growers should use the peat-and-perlite method. This allows you to learn and to improve your grow skills using a very simple and forgiving hydroponic method. While the results won’t be as spectacular as you’d see when using some of the other methods, it’s still a very effective way to grow. You won’t be disappointed.

Another consideration is location. Are you growing is a closet or a basement? Or do you have a dedicated room for your grow? A shed or garage, maybe? With seasoned growers that use only a closet or corner of their basement, the ebb-and-flood or aerated-solution methods should be used—NFT and aeroponics need space and are high-maintenance.

Be realistic about your requirements, space being the first thing to consider and therefore the deciding factor. If you want to squeeze your system into an area barely big enough for it, think about fixing a leak in a pipe with only a few inches between it and the wall. Not good.

Now for cost. The cheapest system I’ve outlined is the peat-and-perlite method, though I recommend the aerated-solution or ebb-and-flood method if you can swing it. The mild increase in cost is far outweighed by the results and the lack of headaches.

So those are the common hydroponic methods in a nutshell. I hope it will be useful to you. Best of luck in your growing endeavors!

This feature was published in the July, 2019 issue of High Times magazine. Subscribe right here.

Top 10 Best Hydro Weed Strains to Grow – 2021 UPDATE

When growing weed, one of the most common rookie mistakes is not selecting the right strain for the growing medium. When it comes to hydroponics – the method of growing cannabis in water to which nutrients are added -choosing a suitable strain is vital for a successful grow. To make things easier for you; here are ten amazing strains, all of which are particularly well-suited for a hydroponic set-up:

Why are hydro strains so popular?

Although arguably demanding higher levels of skill and attention than conventional growing methods, hydroponic strains are increasingly popular. Hydro strains do not necessarily produce greater yields, but they tend to grow faster and more reliably than weed that is grown outdoors. For beginner and advanced hydroponic growers, the following strains are all highly recommended.

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Top 10 Best Hydro Weed Strains

1. Gorilla Glue

If you want massive harvests and a powerful high with the least amount of fuss, Gorilla Glue has to be the number one choice. Plus, you will notice copious amounts of sticky resin, which give the strain its name, which are ideal for making hash and other products.


Gorilla Glue is classed as easy to grow, so with a hydroponic set-up and a bit of research, it is possible to take growing weed to the next level in terms of yield and quality. Flowering takes approximately 8 to 9 weeks.

Effects, taste and odor

Look forward to the type of ultra-powerful high that literally glues you to the couch – another reason for its name. Taste-wise, Gorilla Glue features a lovely blend of coffee and chocolate with an aromatic diesel aftertaste.

Gorilla Glue #4 feminized seeds

Levels 28% THC / 1.5% CBD
Variety 50% Indica / 50% Sativa
Max yield indoor 450 to 600 grams/m²
Max yield outdoor 600 to 750 grams/plant
Flowering time up to 63 days
Growersprofile Beginner

2. Blue Dream

Blue Dream is famous for being one of the easiest strains of weed to grow, which is why it is ideally suited for experimenting with hydroponics.


Blue Dream is a plant with an overwhelming desire to grow tall and vigorously, which is why it is virtually impossible for a novice to get it wrong.

Effects, taste and odor

As far as the taste is concerned, Blue Dream lives up to her name and is truly a dream to smoke. You will recognize the sweet, fruity Blueberry, complemented by fresh undertones of grapes and flowers. Blue Dream is one of the most popular strains in the USA, thanks to her ability to calm and stimulate creativity whilst offering a sense of euphoria.

Blue Dream feminized seeds

Levels 21% THC / 0.1% CBD
Variety 30% Indica / 70% Sativa
Max yield indoor 550 to 650 grams/m²
Max yield outdoor 600 to 700 grams/plant
Flowering time up to 70 days
Growersprofile Beginner

3. Amnesia Haze

Amnesia Haze is a world-famous cannabis strain that contains mainly Sativa genetics and a high THC content. These seeds result from a crossing of very stable parents, have an excellent germination capacity, and do well in hydroponics.


Amnesia Haze feminized cannabis seeds can be grown both indoors and outdoors. However, this cannabis plant will grow and flower more stably when grown indoors because it is sensitive to bad weather conditions, so hydroponics is ideal. This cannabis plant will provide you with a high yield of THC rich cannabis.

Effects, taste and odor

The effect of this Amnesia Haze is powerful. The feeling of total relaxation and tranquility will set in fairly quickly after smoking and will be noticeable for a long time. The taste of smoking this cannabis can be described as spicy, in line with the traditional Haze flavor.

Amnesia Haze feminized seeds

Levels 20% THC / 2% CBD
Variety 30% Indica / 70% Sativa
Max yield indoor 600 to 650 grams/m²
Max yield outdoor 650 to 800 grams/plant
Flowering time up to 65 days
Growersprofile Moderate

4. Bubba Kush

Bubba Kush is a feminized, Indica-dominant strain and is arguably one of the best Indica’s this world has to offer. A true legend. It is, therefore, no coincidence that the species is one of the ten most sought-after species in America.


It is a compact and robust cannabis hydro strain that is easy to grow. Furthermore, it flowers nice and fast and then produces tight buds with a nice thick layer of resin. Bubba Kush delivers a generous yield of high quality and requires little effort from the grower.

She performs very well indoors and is happy with a small grow space. The plant looks beautiful and takes on a beautiful purple complexion when the temperature drops to 10 degrees outside.

Effects, taste and odor

The aroma is intense, with recognizable spicy citrus flavors. Bubba Kush is lovely to relax with after a busy day because of its calming effect. A true Indica goddess that provides the ultimate calming effect right after the first puffs of your joint.

Bubba Kush feminized seeds

Levels 20% THC / 0.1% CBD
Variety 80% Indica / 20% Sativa
Max yield indoor 500 to 600 grams/m²
Max yield outdoor 600 to 800 grams/plant
Flowering time up to 63 days
Growersprofile Beginner

5. Girl Scout Cookies

Girl Scout Cookies are feminized cannabis seeds created by crossing two world-famous cannabis strains, namely the OG Kush X Durban Poison. This has resulted in a cannabis strain that mainly consists of Indica genetics.


Girl Scout Cookies is a cannabis plant that does not deliver vast amounts of weed, but she does give you a good quality of delicious weed. This is a strain that is regularly cultivated as medicinal cannabis, mainly for anxiety, depression and chronic pain. GSC does very well in hydroponics.

Effects, taste and odor

GSC’s taste is reminiscent of chocolate with a light mint flavor. The high is uplifting and calming, sending users into a trance of euphoria and a thought-provoking cerebral mood.

Girl Scout Cookies feminized seeds

Levels 21% THC / 0.7% CBD
Variety 80% Indica / 20% Sativa
Max yield indoor 450 to 500 grams/m²
Max yield outdoor 550 to 650 grams/plant
Flowering time up to 63 days
Growersprofile Beginner

6. Sour Diesel

Sour Diesel is a classic strain that consists of a nice balance of Indica and Sativa genetics. This cannabis strain is very well known and is one of the most cultivated strains in the world, particularly in the USA.


Sour Diesel cannabis seeds are easy to germinate and will grow into beautiful cannabis plants that produce a good yield of sturdy buds. The THC content of this great hydro strain is pretty high, and so novice smokers should approach it with caution.

Effects, taste and odor

Sour Diesel has fast-acting and energizing effects, which are the results of its Indica and Sativa influences. The smell and taste are pleasantly woody and skunky with lingering notes of pungent diesel.

Sour Diesel feminized seeds

Levels 20% THC / 0.4% CBD
Variety 30% Indica / 70% Sativa
Max yield indoor 400 to 500 grams/m²
Max yield outdoor 500 to 600 grams/plant
Flowering time up to 70 days
Growersprofile Beginner

7. OG Kush

OG Kush is intensely popular at the moment, perhaps because it’s the favorite strain of rappers such as Wiz Khalifa and Juicy J. Or it could be because it is a great smoke, packed with THC.

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The OG Kush can be grown indoors and outdoors. However, indoor cultivation is preferred because it tends to grow small, sturdy and bushy, making it easy to manage in small spaces. You can choose to top her so that the lower stems also get more air, ensuring an even better harvest.

Effects, taste and odor

The effect will take place very quickly, and this is particularly noticeable in the brain. Your focus will increase so that colors and sounds can be experienced as more intense. This will then lead to a refreshing feeling resulting in intense euphoria. This combination of mental and conversational stimulation will increase your interest in social activities.

OG Kush has an earthy and musty aroma mixed with fresh citrus. However, the smoke can sting and induce coughing. It can be harsh on the nasal cavity and cause watery eyes, as it is a heavy boy. The taste is hash-like, spicy and has a classic Indica flavor on the inhale and exhale.

OG Kush feminized seeds

Levels 26% THC / 0.5% CBD
Variety 75% Indica / 25% Sativa
Max yield indoor 425 to 475 grams/m²
Max yield outdoor 500 to 550 grams/plant
Flowering time up to 63 days
Growersprofile Moderate

8. Skywalker OG

Skywalker OG is a cross between Skywalker and OG Kush. The cross between the two resulted in a dominant Indica hybrid with a THC content of up to 20%. If you are in the process of making your own hash, this is a great variety. It produces a good resin, perfect for collection and extractions. Furthermore, this strain is relatively easy to grow and can be grown by new growers.


The Skywalker OG hydro strain is highly resistant to insects and stress, mainly due to its Skywalker OG genetics. You can grow her both indoors and outdoors; under optimal conditions, she will yield high yields of weed. In addition, you do not have to master cultivation techniques or be an advanced grower to grow great results from these cannabis seeds.

Effects, taste and odor

Skywalker is a fairly strong weed with intense effects inducing relaxation and euphoria. Look forward to an excellent smoke with a piney Kush flavor with citrus notes and a subtle hint of diesel.

Skywalker OG feminized seeds

Levels 20% THC / 0.5% CBD
Variety 80% Indica / 20% Sativa
Max yield indoor 500 to 600 grams/m²
Max yield outdoor 600 to 700 grams/plant
Flowering time up to 65 days
Growersprofile Moderate

9. Green Crack

Green Crack was born from the cross between the late eighties SSSC Skunk # 1 and an Isolated Afghani Cut. The result is a strong, solid, easy to grow, short flowering, potent and productive strain.


Green Crack grows strongly, and growth must be controlled in order to have enough space for flowering. It resembles a Christmas tree in shape, with an abundant production of large and heavy buds covered with resin.

Effects, taste and odor

Green Crack is a range intended for those looking for aromatic qualities and a sweet and fruity taste of excellent quality and high performance. It is a very popular variety in California.

Green Crack has an intense flavor, with hints of tropical fruits, sandalwood and incense. The high is a powerful and euphoric brain rush stimulant, typically Sativa. In addition, this strain is suitable for therapeutic use.

Green Crack feminized seeds

Levels 25% THC / 0.5% CBD
Variety 40% Indica / 60% Sativa
Max yield indoor 500 to 600 grams/m²
Max yield outdoor 800 to 1200 grams/plant
Flowering time up to 63 days
Growersprofile Beginner

10. Jack Herer

Jack Herer is a specific strain of cannabis named after the American politician ‘Jack Herer’ in tribute to him and his work. Jack Herer was created through a careful crossing in the 1990s and has won several cannabis prizes. The weed from the Jack Herer plant is delicious and spicy.


These feminized cannabis seeds grow into a fine medium-sized cannabis plant with beautiful buds and a powerful scent.

Effects, taste and odor

Jack Herer’s complex genetic background results in a delicate balance, just at the meeting point of Sativa and Indica. This balance is also reflected in effect: a clear high in combination with an intense body buzz. The taste is woody, spicy and slightly sharp.

Hydroponic Growing Supplies

Successfully growing your own plants can be one of the most rewarding experiences of all, and the team at FloraFlex ® strives to help our customers begin their own grow projects. Our hydroponic growing supplies have been carefully designed based on the inspiration and experience of growers in Southern California. After listening and learning from experts in the industry, we used their methods and traditions to form the foundation of our products, and we’re happy to share them with you. Whether you’re a new grower who just discovered your green thumb or you’re an experienced gardener, we have all the hydroponic growing supplies you need to produce healthy, beautiful plants.

We understand that hydroponic systems are rather complex and comprised of many working parts, which can make maintenance and replacements seem like daunting tasks. Luckily, FloraFlex is here to help make shopping for hydroponic supplies online as convenient as possible. Our extensive selection eliminates the hassle of shopping around multiple sites; instead, we offer everything your hydroponic system could need all in one place. Check out our nutrients collection for all your fertilizer needs or our micro drip collection for irrigation supplies. Whatever you need, you can count on FloraFlex to make finding hydroponic supplies online as easy as possible.


FloraFlexers conserve up to 60% of water, nutrients, and time by incorporating the best and most efficient ways to deliver water and nutrients to their plants.


Eliminate algae by either blocking light to the top of the media, or keeping the top of the media dry using our sub-surface drippers.


Take the guesswork out of feeding and take control of your setup with our innovative and user friendly product line. Become a better grower by finding what works best for you and your plants.

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