My best success with a linear flow was using a canister outlet and a circulation pump in tandem. The canister outlet agitates surface and circulation pump moves lower half of tank in a vortex style.
The wood and wall form a directional buffer zone for the water to flow around and gives places for fish to dart into when spooked and river fish know how to do that. As well as places of relative peace to hunker down for the night.
I attached a rough pic to illustrate what I mean.
The wood and wall form a directional buffer zone for the water to flow around and gives places for fish to dart into when spooked and river fish know how to do that. As well as places of relative peace to hunker down for the night.
I attached a rough pic to illustrate what I mean.