water surface - layer of oil/film/proteins
Thanks, the spray just dont work.
Any ideas why this happens? Also, I tried with water turbulence, but the layer of oil is simply too much, can't get rid of it with the water turbulence.
Searching around, i guess this is a layre of proteins, but not sure howit comes and how to remove it
I am feeding using tetrabits - granular food. This is a matured tank for 9 months and this oil thingy appeared 1.5 months ago till now.