Please help! My Balloon Molly is acting odd, it is just hovering over my heater. I did add a new cory and filter (Aqueon 20) on this past Sunday, but I still have my old filter running (tetra Whisperer). The new cory makes 4 fish in my 10 gallon. I am concerned about my Molly overall because it is one of my first fish and I have grown very attached to it. Here is a pic:
PS: My Molly has moved some, but is still hovering in a different place now. Could the problem be the power/flow of the new filter is too strong? Also not sure of the chemical levels, but I did just change the water.