Build a soil carries the earth boxes too. They might be cheaper. I think there's a promo discount code for it too. I'll check when I get home.
what i liked most about the earth box was the short height, i couldnt find any rubber maid storage containers that were 11 inches tall, and I only have 4 feet to work with after the fan and light, and false floor, have to keep stealth,, so the earth box at 29 wide 14 deep and 11 tall was just perfect for my short grow cab,, but YOU my friend sold me on the sip method, and I will put a airpump into the res, like you do