Flow through bin -- worth it?
I'm currently using a rubber maid worm bin with ventilation and drainage holes. Everything is going great, worms are eating well and there are plenty of cocoons. I kind of have an itch to build a flow through system out of a trashcan I own. I think it would work better to harvest vc and I've heard that worms are more productive in a FT (not sure why). But my current in is 3 square feet about 8 inches deep. I've read that in a FT system, you want at least 18" of depth. The surface area of my trashcan is 2 square feet, but roughly the same amount of cubic feet. Should I go for it, or will the smaller surface area impede the growth of my worm population?