Oily Tank Surface
Hello everyone, I got a 70 gallon with a rena xp2 filter and 265 watt canopy. The tank has been setup for nearly 2 years now, and for as long as I have know, there has been either a white haze or an oily haze on the surface of the tank. Not sure if the white haze is the same as the oily haze, but I have tried to suck it all out. I get most of it but by the next day it's all back. Fish seem to be ok with it. Does anyone know where it comes from??