I have fish (like a Clown Knife) that live in slow moving rivers. They are supposed to like a tank setup that has little surface disturbance or currents. This is difficult to do if you run as much filtration as I do. It also reduces the amount of oxygen in the water. I have my outflows from my cannister filters setup so that they point straight down. I have a little surface water movement from a couple of HOB filters, but for the most part the water surface is very still (no ripples). Anyone with a Fluval cannister knows that if the return is not pointed downward it creates a lot of lateral current. So I am wondering if (within reason) it is more important to recreate the biotope or keep my water circulating and highly oxygenated?
How to setup a tank to mimic a slow-moving river?
- Thread starter lujor
- Start date
I would think surface aggatiation would be fine as long as the main body of water doesn't have a lot of current. They're not going to be spending most of the time at the surface. And you will get the gas exchange.
Keep the turnover rate the same but baffle the return so the flow is deflected off of the tank wall and just creeps uniformly through the tank. Works in my betta setups.
