Cannabis hydroponics
How to Build Your Own Cannabis Hydroponic Garden
Nomadic, Clandestine, Cannabis Hydroponics
Introduction to Cannabis Hydroponics
Passive Hydroponic Systems
Active Hydroponic Systems
Introduction :
These are plans to make a reasonably transportable, and extremely cheap water culture system. These plans only explain the simplest way to make the garden itself, and do _not_ explain the simple way to use / maintain it.
If you plan on using this garden, you need to get a good book on hydroponics, and look it over ( particularly the parts about what nutrient answers to use, your garden vareity Miracle-Gro will not do the job ). Disclaimer : I’m purposely leaving out those parts about plant nourishment, light cycles, and so on. In order not to seem to be writing a manual for growing cannabis. It’s also to make you search out _another_ source of info so your knowlege of hydroponics comes from more than simply this file. I don’t grow cannabis, and never have. I am simply a high technology home gardener with info to share. If you’re caught growing cannabis while using the system described herein, don’t under any circumstances think of running to me, I did not tell you to grow cannabis. Actually, I’d suggest planting a crop of cherry tomatoes, which can be confused into manufacturing fruit inside year round, and is a very simple plant to start hydroponics with. One. Everything must be made light tight. Paint all hoses, the bucket, the PVC / ABS ( that may be called PVC from this time on ) and the lid of the bucket with a layer of black paint.
Let it dry overnite, and then cover it with a layer of white paint ( to make it reflective, and cut back the temperature of the nutrient solution ). Two. Take each of PVC pieces and drill a 1″ hole in the side, about one inch from the end. Then epoxy the caps onto the ends of the PVC. Three. Drill the inlet / outlet holes ( these should be found on the caps of the PVC ) The inlet hole should be as low as feasible ( as near to the wall of the PVC ), and the outlet hole should be as high as practical ) four. Now cut 2 5″ holes in the sides of the bucket ( near to the top ), and epoxy the PVC prepared so about 2″ of pipe ( and the outlet hole ) are within the bucket, and the 1″ hole is facing straight up. Five. Oxygen into the nutrient solution, and not to melt CO2. CO2 can kill rootsystems. If you’re growing outside, or not improving CO2, then the pump can sit anywhere. Six. Place the waterpump in the base of the bucket ( presuming it’s a submersible one ) and fasten a hose to it. Long enough to reach the pinnacle of the bucket. Cut a hole in the lid of the bucket for this hose to go thru.
Then attach the TEE fitting to the hose. Now attach hoses to the free ends of the TEE, and run them to the inlet holes on the end of the PVC pipes. Use clamps on the TEE fitting and on the pump itself, but use epoxy to glue the hoses to the PVC. This seal must be utterly water tight. Let them dry for twenty-four hours. Seven. Put some water in the bucket and switch on the pump. What should occur is the PVC pieces will fill with water, and then when they’re full, they should start to steadily drain out the outlet holes, and into the bucket. If you’re getting leaks anywhere, fix them immedately.
If water is leaving the 1″ hole on the head of the pipe, then either your pump is too powerful, or your outlet hole is too tiny.
Fix one or the other. Eight. Empty the system ( hint, take away the hose from the pump to empty the arms ), and replace the water with some kind of hydroponic nutrient solution ( look in a hydroponics book for details on what exactly to use, or visit a gardening store, and ask ) nine. Place your plants into the system. The simplest way I’ve found to do this is to take an one 1 / 8″ garden hose and cut a 1″ tube off one end.
Then slit the tube down one side.
Wrap the stem of your plant ( just above the roots ) with polyester fluff ( available at aquarium stores, for stuffing into external water filters ) and then wrap the garden hose round the fluff. Then force the hose into the hole at the pinnacle of the PVC arm. Folk also have used rubber stoppers. Ten. Turn online / water pumps, and let your garden grow. Comments : This is definitely merely a little setup, but these plans can simply be modified for much bigger systems, using longer pieces of PVC, or more than one pair of arms, and a bigger bucket to hold the nutriments ( I have seen one made with a fifty five gallon drum, and eight seperate arms, each holding four plants ) I myself use this setup inside ( under a skylight in my house ) to grow two cherry tomato plants. What you do with your own garden is your own business, and Clearly I can not be held responsible if you decide to grow anything illegal.
Starting Seeds : This system isn’t for seeds.
Either purchase little plants, or start your seeds in a pan of vermiculite, flooded with 0.5 strength hydroponic nutrient liquid. When they’re about 4-6 inches tall, they’re prepared to be moved to the system. Remove them gently from the vermiculite, using clean water to get each last chunk off the roots. Then wrap the stems in polyester fluff and garden hose ( see above ) Winding , Clandistine, Hydroponic Garden I have been exploring hydroponic gardening recently, and thought y’all might have an interest in hearing about my setup : Comments on Cost – If you purchased all this stuff, it might run about one hundred bucks… I got my trunk at a yard sale for $5, had the fan scattered around, and thru some creative scrounging on a public bike trail late, invented the HPS lamp and ballast absolutely free. The dishpan came from a ‘Everything’s a dollar’ store, and froth is cheap… I suspect I spent $30 total ( including manure, which I’ll discuss later ) What to do with this stuff- First, cut the handle off one end of the trunk, then stand the thing up on that end. Sitting it on a telephone book with the door hanging off the end makes it far easier to open and close. Then install the fan…
I put mine on the head of the box, but it may go in the top back corner if light leaking is crucial. A fair deal of light will be exiting the fanhole ( well, more than anyplace else ) …
Keep this under consideration. I also painted the fanblades white in a scheme to reflect the light into the box, but Im unsure if it worked… It potentially isnt required. Put some intake holes along the base of the box, these will be covered with foil later, so not that much light will be dribbling out.
Cover the whole within the box with foil, excluding the fan area, and where you are counting on installing the lamp. I used gaffa tape to hitch it to the walls / door, and I LEFT IT UNATTATCHED AT THE BOTTOM so air could come thru the intake holes. Install the lamp! I put mine at the top middle of the door, with the bulb sticking straight out, so it enters the remainder of the box when the door is closed. This made it simpler to wire, but In the future, I might put it on the back wall of the box, as less of your room will be illuminated when you open the thing ( it’s a little like opening up the sun ). Thoughts on Lamps- According to Ed Rosenthol ( believe him if you would like to, ignore him if you do not ) HPS lamps are just some of the best growing lamps made, particularly when potency is a problem. These lamps give off an amberish glow, and are frequently used to light parking lots, bike trails, etc. They operate on a particularly high voltage, and require a transformer or ballast to work. Metal Halide lamps ( employed in photographic and theatrical lamps ) are smaller, and much whiter, and often don’t need ballast, but they use up a hell of a ton more energy I made use of a Flurescent to sprout the plants, and switched to HPS after they’d developed three sets of leaves ( about forty eight hours after germination ) This was sufficient. Next, it’s time to handle the froth and plant. I soak the froth overnite in a nutrient-water mix ( more on that later ) after rinsing it well. Then I cut a brick or two into 1″ cubes, and plant one seed in each cube. Planting in froth means you place the sead on the froth, and push it in with a little wire or something similar, so that the seed is besieged as much as humanly possible by the wet froth. The cubes are placed in the dishpan, and 0.5 ” of water-nutrient mix is added to the pan. The froth shrivel yet, no do I particularly care. I just plant a large amount of seeds, and then use the best seeds for my gardening.
Sometimes a smoking-buddy or somebody will take a free cannabisseedling off your hands with the minimum of bother. About three days after germination, some pairs of leaves should’ve formed. Now could be the time to transplant. And transplanting is the glory of froth. All that you need to do to transplant things growing in froth, is put the tiny block of froth ( with the plant in it ) on top of the bigger block, and rub them together a few times. The roots will grow out of the tiny cube, and into the bigger one in a matter of a couple of days. I managed to find froth in 12″ cubes… Cutting these in half gave me two pieces of 12″x12″x6″ froth, and each of those can simply hold one plant, potentially two. I grow just one plant in each trunk, but 2 smaller ones are potentially perfectly satisfactory.
Lighting- When I transplant is when I switch on the HPS lamp. It then stays on for 24 hours / 7days till the plant is 8-15 inches tall. Then it’s time to persuade blooming.
This is done by giving the plants a 10-16 hour dark period in each twenty-four hour day ( this may be done employing an inexpensive timer like folk use when they are going away on holiday in a plan to foil burglers ) In a matter of three weeks, sex should be clear on the plants… Take away the MALES. Keep the dark period steady till it’s time to choose, dry and enjoy. A word on water-nutrient mixtures- Floram froth should be absolutely inactive, meaning it doesn’t give the plant with ANYTHING except something for the roots to grow in. Thus all nutriments that the plant would get from the soil MUST be in the water. Read one or two books on hydroponics to work out what mix fits you most closely, I myself use a liquid plant food that shows on its label an N-P-N count of 10-15-10. This appears to work reasonably well for me. I know folks who use 20-20-20, and a few who use different foods during different stages of expansion. Read up on the topic and choose for yourself. Anyway, this was not ment to be a ‘HOW TO GROW WEED’ sort of post, but allegedly it’s become one ( kind of ). It was ment to discuss my grow room, as it was described earlier in this post. I’ve found a single plant can grow to maturity without any difficulty in this space, and two smaller plants ( compelled to flower at roughly eight inches, rather than the 10-12 that I myself use ) would most likely be ok too. This grow room is extraordinarily transportable ( disconnect it and take it with you ) secret ( it seems like a trunk to me ( not an unusual thing in a varsity dormatory if you’re a student ), and it can be locked with a padlock ) and effective ( trust me ) I presume one could grow using standard soil and such in this thing, but I’ve had great success with froth, and it is way easier to keep it watered. Rockwool has been sugested to me as a medium, but I dont even know where to buy it… Reputedly it is very similar to froth in that it is inactive, and transplanting is a breeze. Intro to Hydroponics if you have ever grown a yard tomato, or kept a coleus alive thru the winter, you have all of the experience you want to grow plants hydroponically. Quite simply, hydroponics is the strategy of cultivating plants without soil. The plants are grown in a non-nutritive medium , for example gravel or sand, or in light, synthetic materials like perlite, vermiculite ( a mineral-mica nutrient base ), or Plastic .
Nutriments are then supplied to the plants in one of 2 ways : either by soluble manure that are dissolved in water, or by time-release manure that are whisked into the medium. The benefits of a hydroponics system over typical horticultural techniques are many and sundry. Dry spots and root drowning don’t happen. Nutrient and pH issues are essentially eliminated, since the grower maintains a tight control over their concentration. There’s not much possibility of “lockup,” occurring when nutriments are fixed in the soil and not available to the plant. Plants can be grown more expediently in smaller boxes.
And, because there is not any fooling around with soil, the full operation is simpler, cleaner, and far less troublesome than it might be with typical growing strategies. Most hydroponic systems fall into one of 2 broad classes : passive and active. Passive systems ,eg reservoir or wick setups, rely on the molecular action embedded in the wick or in the medium to make water available to the plant. Active systems, which include the flood, recirculating drip, and aerated water systems, employ a pump to send nourishment to the plant.
Most commercially made “hobby” hydroponic systems designed for general use are built shallow and wide, so that an intensive garden with a range of plants can be grown. most cannabis growers like to grow each plant in an individual container.
Inside , a three-gallon container is acceptable. Outside , a five-gallon ( or bigger ) container should be used if the water can’t be replenished often. Automated systems irrigated on a consistent schedule can use smaller boxes, but all boxes should be deep, instead of shallow, so that the roots can resolutely anchor the plant. Passive Hydroponic Systems Last month we introduced you to passive hydroponics.
In this installment of Ed’s Grow Tips, we outline 2 passive systems that are cheap and simple to maintain. Now you can also do it hydroponically!
The Wick System.
The principle underlying this kind of passive system is a length of three / 8- to five / 8-inch thick platted nylon rope, used as a wick, will draw enough nourishment from a reservoir crammed with a water / nutrient solution to keep a growing medium wet. The container, which holds a rooting medium, has wicks running along the bottom and dropping thru tiny, tight-fitting holes to the reservoir. Keeping the holes little makes it tricky for roots to penetrate to the reservoir. By skyrocketing the number or length of the wicks, or their thickness, you can increase the quantity of water brought to the medium. A three-gallon container should have 2 wicks ; a five-gallon container, 3 wicks. The wick system is totally self-regulating : the quantity of water delivered relies on the amount lost thru evaporation or transpiration. The medium : A 1-1-1 blend of vermiculite, perlite, and Plastic makes a convenient medium, as the parts are light and readily available. Vermiculite alone occasionally develops too air-free an environment and becomes compacted, so a tall plant might ultimately tip over. Perlite, which doesn’t compress, keeps the medium loose and ethereal. Foam beads hold no water, and so help in keeping the medium drier. Pea-sized sliced polyurethane froth, gravel, sand, and lava may also be utilized in a medium. Regardless of which materials you use, the bottom inch of the container should be filled only with vermiculite, which is extremely absorbent, so the wicks have a perfect medium for moisture transfer.
Remember that each medium has a maximum saturation level – beyond that point, a rise in the quantity of wicks won’t increase the level of moisture. Construction : Cut four holes, about [*FR1] ” in diameter, in the base of a three-gallon container. Run the wicks thru the holes so that each end extends about 3 inches outside of the container.
Unbraid the wicks to help assimilation.
Put 2 bricks in the base of a deep tray ( an oil drip pan will do fine ), into which you have poured the water / nutrient solution, then place the container on the bricks so the wicks are dunked in the solution. Replenish the solution as it is soaked up. A modification on this system can be made by employing a further outer container instead of a tray. With this strategy, less water is lost thru evaporation. To be certain the boxes fit together and come apart simply, place the bricks in the bottom of the outer container with the water / nutrient solution till it comes to slightly below the base of the inner container. The Reservoir System.
Even easier to use than the wick system, you need simply fill the bottom 2 or 3 inches of a 12-inch-deep container with a coarse, penetrable, inactive medium like lava, ceramic beads, or sliced pottery, and then pour in the nutrient / water solution. Differences on this technique include a plastic flower cannabisor plastic growing bag placed in a tray or pail of nutrient / water solution. Watering : All passive systems should be watered from the top down, so that any surface buildup of nutrient due to evaporation will be washed back to the bottom. Active Hydroponic Systems Last month we introduced passive hydroponic systems.
In this installment of Ed’s Grow Tips, we shall explore active hydroponic systems.
The Flood System.
The flood system is composed of a tub or container holding a medium that’s absolutely flooded on a consistent basis, often once, twice, or 3 times daily, depending on the growth stage and environmental elements. The medium holds enough moisture between irrigations to meet the requirements of the plant. First-generation commercial greenhouses using this strategy were generally built with long beds of gravel that were methodically flooded.
Today, the flood system is most frequently used with individual boxes, where each container is attached to the reservoir by tubes or by a leak-proof seal. The medium : With this system, growers have a range of mediums, including sand, pebbles, chopped-up rubber tires, pea-sized lava, gravel, and vermiculite-perlite-Styrofoam mixtures. A popular mix for this setup would be one part each of perlite and Plastic , and 2 parts vermiculite, or one part vermiculite and 4 parts lava. Note that because perlite and Foam are lighter than water and will float if this system is totally flooded, neither should be used as a stand-alone medium with the flood system.
Construction and upkeep : A straightforward flood system can be made using a container with a tube attached to its bottom and an one-gallon jug. Fill the container with the medium. Every day, pour the water / nutrient solution from the jug into the container, holding the tube up high enough so that no water drains out. Then let the tube down so the water drains into the jug. Some water will have been soaked up by the medium, so fill the jug to its original level before the following watering. The plants’ water desires increase in the lighted part of the daily cycle, so the ideal time to water is when the light cycle starts. If the medium doesn’t hold enough between waterings, water more often. Flood systems can be automated by employing an air pump to bump water from the reservoir into the growing unit. The Drip Emitter System. Drip emitters are complete systems that may be purchased in nurseries or garden shops. They have been utilized for years to water individual plants in gardens and houses. They may also be used with a central reservoir and a pump so the water / nutrient solution will be redistributed intermittently. If you select this system, make efforts to buy self-cleaning emitters so the melted nutrient elements don’t clog them with salt deposits.
Start pumping about a gallon each 6 hours during light hours. Drip emitters may be employed with semiporous mediums like ceramic beads, lava, gravel, sand, or perlite-vermiculite-Styrofoam mixtures.
The Aerated Water System.
The Aerated water system is the most complicated of the hydroponic systems, and as it permits the least margin for mistake, it should be used only by growers with prior hydroponic experience. To put together an aerated water system, you’ve got to first construct a clear air channel in your container.
This is done by inserting a plastic tube cut with holes thru the medium. Then a fish tank aerator is placed at the base of the plastic tube. The air channel permits the air to circulate without upsetting the roots, and the roots use the oxygen melted in the water.