I am using a stockman standpipe in my overflow. It actually takes the water from about 1 1/2" below the top water line.
I am developing a film on the top now.
What can I do to filter this? I get rid of most with water changes but not all.
Any ideas? Thanks
If its on top of your tanks water you may not have enogh water curculation . I keep my return pointed up to stir the surface water and keep it all mixed so it has a chance to get through the overflow and into the sump . Then in there my bio filt. and protein skimmer can handle it.
I have two powerheads aiming upwards. They agitate the surface at both ends of the tank. I still get a film? It is almost like a fine oil film.
Maybe I need more?
my return is on opposite end from over flow and under the overflow i have one pointed down at an angle to cover the middle and keep a circular current . My return flow just barely breaks the surface , stirs in just alittle air.
