I picked up some barrels from Nova Barrel. Today I wanted to show you what Im doing with these nifty square 4.5-gallon pails. Next week Ill show you the compost barrel, the black soldier fly harvester, and the potato barrels...
Ive played around with deep water culture, sometimes called "floating raft." But you dont have to have a floating raft. You just need to be able to keep the plants roots in the "nutrient solution."
For now lets hit the trust button that I know how to plumb this into my system. I find Im better at showing than telling, so let me show you what Ive done so far.
I pulled out my 2-1/4 inch hole saw (the same one you use to cut holes in doors for doorknobs). Turns out this is the perfect size for one of the standard sizes of net pots. I drilled four holes in the corners of the pail lid. Ive already wedged the net pots into the holes in the picture above.
I also drilled small holes in the center of the pail lid. These will allow water to drip into the pails. Below is a picture of the pail with a 3 foot vertical grow tower resting in the center.
Ill be plumbing these into my system sometime in the next week. Ill fill the net pots and tower pockets with hydroton, then planting can begin.
You could do this with regular round 5-gallon pails. There are lots of pail-based deep water culture systems out there, though I dont think Ive seen any connected to an aquaponics system. I like the square pails because they have a flat side that will work well with the home-made grey plastic bulkhead fitting I use for the rest of my through-wall plumbing.
Heres a sketch showing how Ill achieve constant height of water in my pails (think Durso Siphon or Standpipe). A crate structure will support the flat sides of the pails and block some of the light that will otherwise get to the roots. Ill anchor an EMT loop in the crate structure to hold the grow towers upright and support the piping for the water coming in from the sump.
