I'm getting tired of wasting CO2 in my tank. It currently has a penguin 170 biowheel filter on it. I'm looking to go either external or internal. From what I've seen a cannister is overkill. Any suggestions?
Edit: I was looking at a fluval 2+ or 3+ (probably the 3+). Bio-load is currently light 5 spotted cories, 5 danios, 1 CAE (can't catch the ^%^&%&^%), Cherry shrimp (Thanks Matt), 2 black kuhli loaches.
Edit: I was looking at a fluval 2+ or 3+ (probably the 3+). Bio-load is currently light 5 spotted cories, 5 danios, 1 CAE (can't catch the ^%^&%&^%), Cherry shrimp (Thanks Matt), 2 black kuhli loaches.