I have a small amount of algae growing in and around my rock ledge. It looks like i got a kill on the algae. I just got home from work and 3 more perch died, but the other perch are starting to be scared of me when I walk around the pond. I do also have a couple of Hybrid stripped bass in there and I haven't seen a problem with them. I think its an oxygen thing. Should I run my bubbler 24-7?