This white slime has been building in the tank for a month or so, not sure what it is If someone could help me identify it and suggest a treatment, I would greatly appreciate it.
I don't see anything concerning in the photo, only bio-film and perhaps some pineapple sponges. Can you get a close up under white light of what specifically you are concerned about? Is it causing any issues?
It’s hard to see but if is white slime that keeps showing up, then it could be the “killer mucus” that it usually happens when VOC's (Volatile organic compounds) enter the tank. Most of the times is some sort of air freshener.
I just battle this type of bacteria not to long ago. If this is the case then you most remove carbon, do some manual removing and use Dr. Tim re-fresh and then Dr. Tim waste away. That worked for me in both picos I have.