I noticed last night that i have a sort of white stuff on my tank wall, its kind of looks like the green stuff you get on rocks in the sea! Anyone know if it will be a bad thing or is it natural?
Sounds like bio-film, dirt on the glass. Just wipe it off and it`s fine.
Its just on back wall of my tank, its about half way down, u can see where i wiped round when i changed water last week! will i have to drain bellow that to wipe it off?