Firstly, apologies as I know I have asked questions about an oily surface before.
Nothing I do gets rid of it. I have tried the kitchen towel/skimming techniques, as well as dipping a cup just below the surface to collect it, but within a few days/weeks it returns. So just now live with it.
However, I’m seeing a constant drop in my fish numbers (roughly 5 deaths since mid Feb).
Water parameters are all fine for a 60L tank housing now 2 Tetra and 5 harlequins Rasbora
Ammonia -0
Nitrite- 0
Nitrate- 0/5
PH - 8
Kh - 8
The fish seem to pick up some form of illness associated with weakened immune systems, and then die within a few days, regardless of what treatment is used. Both myself and the aquarium store staff have no idea what’s causing it. The only thing I can think of thats wrong with the tank is this oily surface issue. While it may not be directly harming the fish, I’m concerned whatever causes this issue, is that what is impacting the fish 'behind the scenes'
Any advice?
Nothing I do gets rid of it. I have tried the kitchen towel/skimming techniques, as well as dipping a cup just below the surface to collect it, but within a few days/weeks it returns. So just now live with it.
However, I’m seeing a constant drop in my fish numbers (roughly 5 deaths since mid Feb).
Water parameters are all fine for a 60L tank housing now 2 Tetra and 5 harlequins Rasbora
Ammonia -0
Nitrite- 0
Nitrate- 0/5
PH - 8
Kh - 8
The fish seem to pick up some form of illness associated with weakened immune systems, and then die within a few days, regardless of what treatment is used. Both myself and the aquarium store staff have no idea what’s causing it. The only thing I can think of thats wrong with the tank is this oily surface issue. While it may not be directly harming the fish, I’m concerned whatever causes this issue, is that what is impacting the fish 'behind the scenes'
Any advice?