I have noticed that my tank has got an oily scum floating on top of the water surface.
It is still there even after i have just done a water change.
I have seen some water skimmers which claim to remove the scum and send it to your external filter but they seem expensive.
Will this effect the light reaching the live plants or is this just manufacturers hype?
Rob
It is still there even after i have just done a water change.
I have seen some water skimmers which claim to remove the scum and send it to your external filter but they seem expensive.
Will this effect the light reaching the live plants or is this just manufacturers hype?
Rob