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DIY Simple Hydro System

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Ganja View Drop Down
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  Quote Ganja Quote  Post ReplyReply Direct Link To This Post Topic: DIY Simple Hydro System
    Posted: 24 August 2005 at 13:22

If you're going to flower small plants straight from rockwool blocks, and if you don't already have a hydro irrigation sytem, you can make a cheap, simple, effective one that's suitable for  4-10 blocks.

You'll need:

  • A good fish-tank pump
  • A few metres of vinyl tubing. The tubing must be the same diameter as the pump's out valve - 3-8mm is good, 10mm is possible, but may be harder to regulate)
  • An opaque plastic box with a lid (the type used for household storage  - 25-50 litre capacity).

You can cut square holes in the lid to fit your rockwool blocks (make the holes slightly smaller, so the blocks can fit about halfway in, but cannot fall through).

Secure the pump at the bottom and have the plastic tubing running out from the pump to each block. You may have to experiment a bit to regulate the flow and make sure all blocks get something between a drip and a trickle from the tube that supplies them.

You could also use drip-feed heads to control the flow (see here: http://www.sensiseeds.com/ml/shop.asp?MainLev=2&PluNr=431). These particular emitters fit 3mm tubing (spaghetti tubing)

Lastly, you might want to put a few extra small holes in the lid for drainage, so that any runoff from the top of the blocks can't overflow.

You could spend more time in construction, and rig the tubing so that it is completely contained within the box and only feeds water to the bottom halves of the blocks that protrude through the lid.

You can keep the pump runing 24/7, or have it running several times a day, with the aid of a timer. As long as water is always moving through the blocks (carrying oxygen with it), it's okay to keep the rockwool saturated. Root death can occur when a block is constantly wet and the water is not moving.

I'd keep pH around 5.7, EC 1.6 to 1.8 (up to 2.0 if these are Skunks or Indicas). You can allow the water to continually recirculate, just make sure to check it regularly. You'll probably notice EC steadily declining, as the plants use up the available nutrient.

When we used a set-up like this, we didn't notice much change in the pH over several weeks (we were expecting to see a lot more). Extra nutrient needed to be added once every week or two, and sometimes we'd change the water instead of just adding more feed, just to be on the safe side.

We grew a number of good crops with a very similar system, and very little close attention.

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supermoto View Drop Down
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  Quote supermoto Quote  Post ReplyReply Direct Link To This Post Posted: 24 August 2005 at 20:49
how long did u flower using this system what r the benefits
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supermoto View Drop Down
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  Quote supermoto Quote  Post ReplyReply Direct Link To This Post Posted: 24 August 2005 at 20:50
sounds like more work is involved in hydro
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  Quote teknoponic Quote  Post ReplyReply Direct Link To This Post Posted: 09 September 2005 at 17:26

Supermoto, (From Basics in Sensi's FAQ Section) 

Indoors, what are the advantages of growing hydroponically?

- Indoor cultivation allows more control over a plant's life cycle than outdoor. In the same way, hydroponic cultivation allows the grower an even greater level of control.

- Since plants in a hydroponic setup are growing in a synthetic, neutral medium the grower is able to dictate exactly which nutrients are given to a plant, and at what levels. Of course, this requires more care than organics and usually necessitates the use of a pH meter (to measure acidity in water) and an EC meter (to measure the level of nutrient in water by means of its Electrical Conductivity).

- Hydroponic growing mediums are less bulky and heavy than soil, often easier to handle and possibly easier to dispose of. Pests and fungus are less likely to flourish in rockwool or similar mediums, and are almost never endemic to newly bought synthetic mediums.

- Hydroponic nutrients, since they are highly concentrated, take up less space than organics, especially for large crops. They are usually pre-mixed and do not require the grower to supplement them or combine several different formulas. Also, they will often smell less than organic nutrients.

- In short, the more in-depth control available with hydroponics, when managed effectively, allows for a bigger, more potent and sometimes even faster crop. While such systems are not recommended for first-time indoor growers, those who have experienced success with soil cultivation indoors may wish to try this as the next step in refining their technique.

 

 

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rajasdope View Drop Down
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  Quote rajasdope Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2007 at 09:29
Has anyone tried a wick system?  Apperently you get the benefits of both hydro and soil.  Let me know if you have any experience or comments.
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  Quote Bowen Quote  Post ReplyReply Direct Link To This Post Posted: 11 June 2007 at 23:10
This sounds great ganja, i have all these items lying about apart from the tubing, if I ever get some i'll be sure to rig up one of these babys lol

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  Quote Ganja Quote  Post ReplyReply Direct Link To This Post Posted: 12 June 2007 at 10:46



This is the simplified version.

Inside the bucket is one small pump attached to 20cm of vinyl tubing. The tubing has holes and sprays water in every direction, like a fountain.

Very simple, very cheap, low maintenance and quite effective. The seven plants in the bucket averaged about 7g dry, which makes 50g per bucket. Nine buckets can easily fit in one square metre, so the maths work.

It needs some tweaking, to allow one pump to feed water to several buckets (9 micro pumps per m.sq. would not be practical.
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