Planted Tank VIP
Join Date: Jul 2002
Location: Winston-Salem, NC
A 150 should be just about enough for a 20g H. I'm using one on my 20g H and there aren't any stangnant locations or anything. Contrary to what your impression might be, circulation is very important in a planted tank. What you want to minimize is surface agitation, but you still want plenty of circulation. If the water is too still, the plants will use up all the nutrients available at the leaf surface and "suffocate". Having perfect water conditions with excellent nutrients in the water won't do much good if they aren't being carried to the plants, eh?
- Sam P -
plantedtanker in limbo - all tanks currently in storage