surface film

I recently got a new betta, Milton, about a week ago. I put him in a cycled and heated 10 gallon tank with a marina s10 filter turned to half flow. He seems to be pretty healthy and active so far, exploring and such. he's even blown a bubble nest in the corner of the tank. But I'm worried by a...

Hello all, I've been seeing a white film form on the water surface of my tank a few days after water changes. I've been reading that it's basically dust, organic matter, and a side-effect of the water conditioners. I've also read that increased agitation of the water surface would help break up...