Betta-film on water
I am the caretaker of my 11 yo daughter's new crown tail betta while she is at her Dad's house. He is being kept in a 2.5 tank with 4 ghost shrimp. The tank has one of those whisper filters. Here is my qestion: I noticed a film at the surface of the water along with some bubbles. Is this normal? Since Bettas are surface breathers at times do I need to be concerned about this film? You may ask how much film? On a scale of 0-10 with 0 being crystal clear and 10 being you can't see through the water surface, I'd say the film would be 2-3. We've had the fish and tank since Wednesday, July 25th. Thanks for any help you could give me!