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My home made vertical hydropoic system

Posted by project_gardener 5 (My Page) on
Sat, Feb 2, 13 at 15:53

I had an idea to make a vertical system after seeing much more similar expensive systems. It's aeroponic and the PH swings way high overnight. I know I read about why PH swings like this in a magazine the past year but can't remember what the cause was. I think it was in Cannatalk Summer issue (thrown out now)?

Anyway it's 5 feet tall and grows 12 heads of lettuce within 1 square foot. I'm using Maxigrow at 350 PPM.

I used Maxigrow the past 5 years in DWC and had no trouble with lettuce for PH. Plants look fine but trying to make things perfect. Any idaes?

My system + video of it so far

Here is a link that might be useful: Vertical hydroponics

Follow-Up Postings:

RE: My home made vertical hydropoic system

This thing is awesome! Really simple design but it does the job well it looks like. :) When you have all of the net pots full with lettuce how often do you change the nutrients?

RE: My home made vertical hydropoic system

Very nice, simple yet elegant design. I may make one of these myself. Thank you so much for posting this.
I wonder about lighting though- would the bottom heads of lettuce get enough light?

RE: My home made vertical hydropoic system

Lighting has always been my question with vertical units. So I am curious as well. I just don't see two CFL's getting enough light down 5 feet.
Also, how do you control the volume of the pump so it doesn't overflow at the top?
Do you have any issues with algae growing where light leaks through at the net pots?
It's a nice clean system, but those are just some issues I see with it.
Regarding your pH issue, are you have any evaporation issues?

RE: My home made vertical hydropoic system

The 2 lights above are 400watt metal halide. The bottom plants are doing fine so far. I can't wait to try it in sunlight this summer. At the top I just drilled enough holes to handle the flow from the pump. No algae so far. As for evaporation I'm not sure. Does too much oxygen cause a rise in PH? That's the only thing I can think of.

RE: My home made vertical hydropoic system

I don't believe so. the water will only take so much oxygen before it is saturated. If your nutrient concentration is increasing (evaporation) or decreasing (salts being removed) that would affect the pH.

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