woke up early this morning when i noticed some suds foaming on the top of the water its the first time that i noticed this so i decided to turn of the pwrhead and the suds where still there.I also noticed when i looked up through the water to the light of the tank above that there seems to be what seems like a thin film of some kind, kind of like what u see when u mix a oil and h2o covering the top of the water. i dipped my finger to check it out, it didnt smell like soap and it didnt coat my fingers like oil does..i then drained the tank halfway and the foaming decreased to a level that i normally see in the tank..i suspected at first that it was soap or detergent but wuldnt that kill my fish instantly and the fish are doing fine plus the water doesnt smell like it ..has anyone ever experienced this? or got a clue what this is?
