ralphthemouth
Seedling
Hi, hopefully I've attached some pics of an oily film on the surface of my tank. I'm thinking iron bacteria from the eco complete. I have no fish in there at the moment. I find it quite attractive in an odd way. It's quite colourful. However, will it get worse over time and cause a horrible mess and will it reduce the amount of light getting through? I'm still a beginner so any help is appreciated.