I'm in the midst of setting up a sump on my new 90, and I had a quick question about my return line.
Most of what I've read about sumps seems to pertain more to saltwater setups, and they seem to frown upon trying to use the return water line for internal tank agitation or to create water movement.
I'd really like to avoid having any pumps or powerheads in the main tank however, since my otos have an incredible ability to find new and creative ways of trapping or maiming themselves and there will be 50+ in the tank.
As such, I'd really like to create a vertical spraybar like this one in the main tank off my return line. That way I can disperse the flow vertically in the water column, and direct some of the flow against the glass to encourage the farlowellas to lay their eggs in the main viewing area (I'm told they find the highest flow areas, and they do seem to hang out there in my 20 quite a bit).
Can anybody see a reason not to do this? All the holes would provide an effective siphon break too, which I like. The return line would then be a simple up and over loop with a trio of 90 degree bends, then down again into the spray bar.
I'm using a Mag7 pump if it matters. Really should have bought the 9.5 instead, but I was under the impression the tank was a 75 at the time.