could i put small marble sized peices of LR in my power filter in place of the sponge?
would it serve as a refugium?
would it have an effect on the nitrates?
-Oozy-
Yes, NO - too much flow, and None - natural nitrate reduction takes place in Anoxious(low O2 zones) or Anerobic(O2 free zones) and neither of these will exist in a power filter.
BurnNSpy