foamy tank

[kcherry86]

ok I just bought 3 crown bettas and a 2 1/2 gallon tank w/ dividers, I intoduced them to their new home last night. They seem to be doing well (besides the middle guy seems very aggresive) But anyways, this morning I noticed the tank seems to have foam at the top, is this normal? i have an air stone and and a small heater. I've been keeping the temp at 80 degrees, and I used bottled spring water. Should i take them out and try again? or is there nothing to worry about?

[sawcat]

Is it foam or bubbles (maybe one's built a bubble nest already)? Is it in all the sections, or in one? what kind of decorations do you have in there?

I've never had what I'd consider foam, but my still ones can get a film on the top, from dust and such in the air. Or very sticky bubble nests.