| Re: theories of water changes. IMO/E regular water changes are fundamental to maintaining a healthy thriving tank. I've got plenty of nutrient export/recyling with my DSB, Xenia, LR and skimmer but dosing trace elements is very difficult to do especially since there are no accurate test kits for it, so W/C's are a must for me.
__________________ Robert  My Cube “A spirit is manifest in the laws of the Universe—a spirit vastly superior to that of man, and one in the face of which we with our modest powers must feel humble.” Albert Einstein |