| Re: oxycorynia fascicularis( grape tunicate) Some people use sugar others vodka or even vinegar to help increase bacterial levels but of course it should be very small amounts otherwise the bacterial explosion could decrease oxygen to dangerous levels.
Here's a good info: Reef Central Online Community - dosing vodka to bring down N and P aquariofilia marinha - REEFFORUM
__________________ 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 |