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Old 05-23-2011, 08:55 PM
Kerbouchard Kerbouchard is offline
Junior Member
Join Date: May 2011
Location: Pacific NW
Posts: 19
Default New drain pipe NFT/EF lettuce system

Though we've never communicated directly, GPSFrontier has been a huge inspiration and help as I finalized this system, so thank you, GPSFrontier! This thread provided the final bits of info I needed:

I'm using General Hydroponics Flora Series nutrients in a 30 gallon tub filled to 20 gallons. I have a 185gph EcoPlus pump on a timer, and will be adding the air bubbler in the next few days. Each tube handles 13 plants at 8" apart, though I still have to populate the second tube. I started four kinds of lettuce in a Rapid Rooter 50 tray (about three times, since I kept killing them somehow). I still need to mount the timer and air pump under some sort of waterproof cover.

I flood/drain from one end with black Dig tubing off the pump, and overflow on the opposite end. The overflow height is adjustable, since the caps are non-permanent, sealed with a rubber band around the tube, and the overflow is off-set from the cap center.

I have a cheap HM Digital TDS-EZ meter and a simple GH pH test kit.

So far the plants haven't died, which is far better than my overall luck with the starts, but it hasn't even been a week yet.

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