I finally got fish in my 10g after cycling it for 3 or 4 weeks. Whew! I started with neon tetras and when I put them in they went immediately to the bottom. They're exploring the bottom extensively but won't go any further than about half way to the surface. Could the filter be to strong for them? If so I would imagine it is WAY to strong for a betta.
I can lift the filter intake to adjust the flow of water going into the filter and that significantly reduced the amount of water coming out. If I do this will it compromise the cleanliness of my tank?
Or is this normal behavior for neon tetras?