I’m starting to see long green algae on my fake plants and decor. Some of the fake plants have a darker looking build up on them. Do you scrub off decorations prior to a water change to help get some out or will the floating stuff harm the fish?
The floating bits of algae have never bothered my fish... I have a similar algae type. That said, removing decorations and scrubbing them in siphoned tank water during a WC is the easiest way I have found to clean them.