bubbles

I've had my betta, Sombra, for two months now and today i relocated him to a new 10 gallon tank in hopes add some other kinds of fish in with him soon. When I filled up the tank, these tiny bubbles formed on everything in the tank(even a few are on the marimo he has). I don't remember this...

My tank has been going for over a month now. It's a 10gal with pump and and air stone wall along the back. I also have a heater but my water has been a little on the warm side laity so it have it turned off right now. I have 4 guppies and 4 neon tetras currently in the tank. I'm currently...