Having a strange issue in my tank as of late.
Seems a lot of the things in my tank, heater, underwater plastic log, plants, and the corners of my tank have what looks like "rust" on it - especially the corners of the tank.
Did a quick search on here for rust and someone said its a harmless type of algae that grows in dark parts of the tank - The kicker is I have no dark parts in my tank except for when the lights are off really - and its growing on everything...even if it is just a small thin hardly noticeable layer in some parts.
