Okay, I have two 90 G tanks side by side. Currently each running independently. I want to plumb them together so they are both cycling together out of my 55 G sump. I want to use one external pump to supply both tanks. What I was thinking to do was drill into the sump return section near the bottom and put a bulk head in to supply water to the pump. What size bulk head do you recommend and what GPH pump would you recommend? Kerry
Pump Question
- Thread starter b9ofus
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ChrisKey
Well-Known Member
You shouldn't need more than a 1000gph pump split into the two tanks. Most pumps that small will use 1" pipes or smaller so I would get a bulkhead for a 1" pipe. Then just split the water with a T or a Y fitting and put a ball valve on both sides to control the flow.
ChrisKey
Well-Known Member
Just make sure you leave enough room in the sump for the back flow from both tanks. Probably just need a few inches but something to keep in mind when trying to get extra water into the system if you try to overdo the amount in the sump.
ChrisKey
Well-Known Member
Oh yeah, the Odyssea pump. I never ran it external, but it should work ok. It will definitely be enough flow. I only do about 3-4x per hour through the sump, so that will be plenty enough.
ChrisKey
Well-Known Member
I split my return pump to feed my refugium/frag tank and the other side of the split feeds my DT. I just control each side with an independent ball valve and haven't had a problem.
I always heard if using two pumps it way best to have two separate return sections in the sump, but never done it personally. I have seen multiple pumps in a return at a LFS and I don't think they ever had a problem though.
I always heard if using two pumps it way best to have two separate return sections in the sump, but never done it personally. I have seen multiple pumps in a return at a LFS and I don't think they ever had a problem though.
Mike J.
2500 Club Member
They are separate. So many things can change, like a pump needs cleaning or your overflow has algae on the grate. If the pump is supplying two different tanks you'll always be adjusting something.
