Quote:
Originally Posted by smokingrubber
It's an ebb & flow system. I'll drill 2 holes in the bottom of those trays. 3 times a day the tubs will be filled with about 2½ inches of water, then completely drained back to the main reservoir. Not really that big of a plumbing problem. Must use aquarium silicone!
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Look sport, I built all of the flood and drain tables I use, and posted the build. When you flood a tray, you must completly drain the water away from the plants. These tray without something added to the bottom of the tray will not do that. You would have to countersink your fittings so they would not sit higher than the bottom of the tray. Or add something for the plants to sit on in the tray, I have about 15' by 42" of a material that does a dandy job. Stop by and pick some up if you like, I buy the trays now, they are made to drain.
What you are saying now defeats your whole purpose, the idea was you could use a smaller res for all of the trays, if you flood them all at once ...??