So nobody has ever had something like this happen or knows what it might be? I have had this stuff grow every time I setup CO2, my guess is its not algae cause its white, so I am worried that it is a fungus or something that could hurt my fish/plants. I realize bumping twice now is annoying, but this is the 2nd time in the last few months I have asked this without any responses, I just don't know what to do about it. Thank you for your patience.
Fluval PEEEEMP #9
2xAC30 + AC MINI (it's Hagen; close enough!)
CO2 stuff c/o REX