Earthworms

I popped three baby earthworms from my compost heap into the growbed. Earthworms are photosensitive and they quickly dug themselves into the growbed. Now you may ask yourself how can they survive in the waterlogged growbed?  The answer is DO, or dissolved oxygen. The levels of DO in the water is (hopefully) high.  Earthworms don’t have lungs and breathe through their skins. It really doesn’t matter to them if they are in air or in water, as long as there is oxygen.

I am hoping that the earthworms will process any rotting plant material in the growbed, as well as any solids pumped in from the fish tank.