so i have a 10g low tech grow out tank, i had a small corner filter in there for a while and i removed it after i got a toms mini, i left them both in there together for a little over a week. i just lowered the spray bar below the water line b/c i think that everyone else does that. i had huge surface scum and hair algae break out 2 days after i lowered the spray bar. i raised it so the holes are now right at the surface. this has gotten rid of the surface scum, but the algae is still there. so my question is is it better to have the spray bar completely above the water line to create more oxygen in the water or should i leave it where it is now? i know that more oxygen will get rid of the algae but is it healthier for the plants? i've only had a planted tank for a 1.5 months right now. thanks for the help.