Today was my first water change in my new 5gal. It went very well, Admiral seemed fine, took it like a pro. Anyway, before the water change, I noticed some kind of transparent film floating on top of the water and I thought it would go away after the water change (I did a 50%) but there are still some small pieces floating around. Here's a picture. I've had aquariums before but it's my first time for a Betta. Is it typical? My Betta is doing great so I don't think it's affecting him. I work with dogs and cats so fishes are not my area of expertise. LOL!