What about 3 mag drive 24s put in sump one for each tank.
Sent from my SPH-L710 using MonsterAquariaNetwork App
I wouldn't recommend running one Mag 24 per tank...they are extremely inefficient pumps (drawing 265 Watts) so running 3 would put you at 795 total watts.
In my opinion, the Blueline 100 HD is also not a good option. It only gives you 1,200GPH @ 8' of head pressure and draws 390 watts. You would need to run 3 of these to match the turnover you are getting from the Rio 32HFs and that would be a hefty hit on your monthly electric bill (1,170 total watts!)
If you are using two Rio HF 32's on your two existing 220G tanks, you are probably running about 2,500GPH total or 1,250GPH per tank. If you want to get similar flow on each of the three tanks you intend to run, I think the most efficient (best) options are as follows:
Run one Laguna Max Flo 1500 per tank. Each pump does 1,162GPH @ 6' of head on 100 Watts (totals for all 3 pumps = 3,486GPH on 300 watts).
Run one Reeflo Barracuda- Does 3,333GPH @ 8' of head pressure (the manifold will probably add some head, so I'm using 8' instead of 6' that I used for the Lagunas) and per Reeflo the Barracuda will only draw 248 watts @ 8'.
Just remember that the Baracuda is a high speed pump. The Dart is low speed.
High spped = More noise = More head pressure = Less GPH drop with more head.
Low Speed = Almost Silent = Lower Pressure = More drop off in GPH with head pressure.
Head pressure is the change in height between the pump, and output + resistance of all fittings and reductions. The less fittings, corners, reductions etc, the more flow you can have.
The Barracuda and Hammerhead pumps are also low speed pumps. I think you might have confused them with the Manta Ray and/or the Tigershark pumps which are high speed (pressure) pumps.
Low Speed:
http://www.reeflopumps.com/lowspeedhighflow.html
High Speed:
http://www.reeflopumps.com/powerpumps.html
I definitely agree that the Dart is quieter than the Hammerhead...that was my experience. I ran both and the Super Dart Gold was very quiet whereas the Hammerhead had a loud industrial hum.
Running a Super Dart Gold is another option, but it won't provide the same GPH that the OP is currently achieving:
Super Dart Gold @ 8' Head does 2,440GPH on 173 watts, so he would only be getting around 810GPH on each tank.
I think the Hammerhead might overpower your overflows...you don't want to buy too much pump.
