That white film on top :(
Okay so I've set up my new 10g tank, it's developing the white film on top which I've read about and see I need more surface agitation! My question is would that better serve a planted and future shrimp tank in the form of an air pump air stone, or a powerhead? I saw my local petsmart has an ac30(I believe) powerhead on clearance for around 12 bucks! Of course I'd need to put a sponge over the intake for shrimp but curious what the better option is! The internal filter just isn't moving enough it seems!