I noticed the other day that there is a strange filmy substance floating on top of my water, looks kinda like an oil slick and I've never seen this before. Does anyone recognize it?
Tank is about 7 or 8 months old, I recently experimented with a dose of a tetra product designed to kill algae as I have a bad case of BGA, but it appears a couple weeks after using that product so I'm not sure that is the cause. I talked to my wife, she has not used any cleaners or aerosols in the area of the tank. It does not seem to bother the fish at all.
Do eheim pro II's have any kind of light oil in them that could lurch out?
*edit* filmy might not be a good word to describe it, it does not have any texture, it's very similar to gasoline/oil floating in a mud puddle.
Tank is about 7 or 8 months old, I recently experimented with a dose of a tetra product designed to kill algae as I have a bad case of BGA, but it appears a couple weeks after using that product so I'm not sure that is the cause. I talked to my wife, she has not used any cleaners or aerosols in the area of the tank. It does not seem to bother the fish at all.
Do eheim pro II's have any kind of light oil in them that could lurch out?
*edit* filmy might not be a good word to describe it, it does not have any texture, it's very similar to gasoline/oil floating in a mud puddle.