Im building a 144 sq ft grow bed system.

[sebarker75]

Yes we used 2 x 6 all the way around the structure. we used 4 x 6 on that long span across the sump tank. we have already done a small system with two grow bed the same size and we can out to about 17 gallons of water per grow bed after the pea gravel was in place. the sump tank is a 275 gallon ibc tote. i just about got the plumbing done yesterday. we are going to put the media in today i hope. i have a MD 3200 sump pump to use. It will do about 2000 gph at 7ft of head. i hope it works out good. it had good ratings on it and a good graph. i bought it on half off ponds website. we are using floating catfish food in the small system we have now. they seem to tear it up. lol