Closed loop

[steved350]

I will be starting to drill my 110g display tomorrow and need some comments on the layout of my closed loop. I will be running 2 X 1 1/2" suction bulk heads Y'ed together feeding the pump which is a Pan World 200. On the discharge side of the pump I plan on building a header that has 3 valves going back into the tank with 3 X 1" bulkheads. On the suction side in the tank I plan on Y'ing the 1 1/2" off to 2 X 1" and putting 1" suction screens to lower the velocity to protect inhabitants. On the discharge side I am not sure what to do. Can some one give me some ideas?

 

[steved350]

Tank backside will look like this.

 

[ordy1]

Are you going to oscillate the flow from left to right?

I have a small tank, 46 gallons and I have a Reeflo Dart feeding into a three way actuated valve. The valve turns every minute and a half and feed one side of the tank and then the other. I have the feed from the actuator at 1" pvc. I then reduce, at the top of the tank to 3/4" pvc where I've tee'd it off to three different outlets. At the outlets I've installed 1/2" loc-line valves and fittings. Before the 1" lines reach the top I've tee'd off to a 1" hole I drilled about halfway down the back of the tank. I have two of them, one on each side. I reduced that to 3/4" and ran the pvc down and to the front of the tank, hugging the side glass. I've aimed those two outlets to flow diagonally and toward the back of the tanks. I'll post a pic when I get a chance.

I thought about going bigger, with 1" pvc over the top but I can throttle the Dart pump back and I'm hoping that the five outlets per side of the tank will give me plenty of flow.....