by richardhao » Wed Jun 23, 2010 10:58 pm
This hairy scotch-brite like thing is spreading in my tank. What could this be? is it harmful or beneficial to my tank?
75gal fowlr, 50 gal sump, 45gal cube, hf17 return, ro dnw150
Sunsun 12 Watts, 150watts LED, Teco TR-20 chiller