Join Date: Feb 2017
Location: Louisville, Kentucky
You could try adding a small air stone on the end of the tank opposite the filter output.
You could also turn the pump up higher, but add driftwood/plants/decorations that will help break up the straight-line water flow. That will get you higher overall flow but still provide less turbulent spots for the fish.
I have a Spec V with a betta, some CPD's, and a few others, and I had the filter turned all the way down, but it was too low. I had to turn it up to almost half to get the kind of flow I was comfortable with. I have a fairly large piece of driftwood and quite a few plants to break up the flow though. Everyone seems to be doing ok, including the betta. He still rests up against the filter intake when he's tired, and has no problem escaping the suction when he wants to swim.
Fluval Spec 5gal: Betta tank(A. nana, M. pteropus, C. Wendtii(?), E. argentinensis)
7.5gal rimless cube - S. repens, L. brasiliensis, A. reineckii "mini", R. wallichii - dry started 3/11, flooded 3/25 - will eventually become a shrimp tank (probably CRS or RCS)
10gal - S. repens, L. brasiliensis, A. reineckii "mini", R. wallichii (left over from 7.5gal dry start), C. wendtii, E. argentinensis