Hello everyone. My spring/summer project is to divided a 20 long into a four unit tank for bettas. I am trying to use what equipment I have for it. On filtration I was wondering if my Eheim Classic Canister Filter 2213 would be good enough to give the circulation needed for the tank without stirring up the bettas. I know when I was running it in my old 29 it did not seem to have that strong of a flow. Intake in one side of the tank, outtake in the other side of the tank. I am not sure which way I would place the spray bar vertically or horizontally. And what heater arrangement would be the best. I am not sure that one heater for a 20gal would fit in a single compartment so I was thinking two smaller heaters in alternating sections. I was thinking that they would fit better and the tank would be more evenly heated.
The dividers I am planning on making out of acrylic, with 1/8" holes for circulation and several 1/4" holes near the bottom for shrimp passage from one section to another.
I just need some advice from those members who are running the larger multi-divided tanks and have already gone through all this.