i cleaned my fish tank only 3 days ago and there is already alot of backteria build up and the top of the water is like a film on top???
i have two fish tanks an the big one has never done this before (6x3x2) the one i have upstairs 3x2x1 does this,
could anyone tell me why this happens?
i have two fish tanks an the big one has never done this before (6x3x2) the one i have upstairs 3x2x1 does this,
could anyone tell me why this happens?