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Old 05-29-2004, 06:19 AM   #1
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What size pump?

I'm setting up a 55 gallon tank with a 25 gallon sump. The pump has about 4 feet or so straight up to pump the water. I'm going to split the return line to put water into two separate holes in the top corners of my tank.

What type of pump should I use and what size? What's good flow rate for a 55?

Are there any other things I should take into consideration?

TIA.
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Old 05-29-2004, 09:15 AM   #2
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I've had good luck with my Mag-Drive 9.5. The first one I had was defective and they sent me a new one and it's been fine since.
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Old 05-29-2004, 09:40 AM   #3
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For a submersible pump, I would also recommend the Mag Drive. I would go with at least a Mag 7. If you plan to drill the sump, I'd look at a Blueline external pump...probably in the 6-700 gph range depending on the capacity of your overflow.
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Old 05-29-2004, 09:51 AM   #4
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do you want submersible or external?
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Old 05-29-2004, 12:55 PM   #5
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It doesn't really matter. I've got room for an in-line (external), but if a submersible is cheaper I would go that route.

What are the advantages of each?
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Old 05-29-2004, 12:58 PM   #6
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Quote:
Originally Posted by loganj
If you plan to drill the sump, I'd look at a Blueline external pump...probably in the 6-700 gph range depending on the capacity of your overflow.
What do you mean drill the sump?

I've got two 1" holes drilled at the top of the back of the tank (at the advice of an lfs). What's the flow for that?
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Old 05-29-2004, 01:14 PM   #7
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If you go with an external pump, you'll have to have a hole in the side of the sump for the suction line on the pump. You can't go over the side because the pump will lose prime and run dry. The submersible pump will be cheaper by about 50%. I wouldn't trust the 1" holes for more than about 300gph each. By the time you install bulkhead fittings in them, you'll probably be down to a 3/4" line.
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Old 05-29-2004, 08:50 PM   #8
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I have a via aqua 3300 on my 55 fowlr and I have it cut back some with the valve. It gives me plenty of flow in the tank with just 1 hangon return in the middle. Cheap, quite and reliable..... I have the 4900 on my 125 reef and they both start up every time I loose power, no banging, cleaning spinning.etc..... (knock on wood)
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Old 05-30-2004, 05:26 AM   #9
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My sump already has a bulkhead in it. I'm replacing it while I am working on everything (it looks rather old). The line size is 1".

Questions: (sorry there are so many)
Should I plug it and go to a submersible with the line out the top?
Should I use the hole with a submersible?
Should I go with an external pump (after replacing the bulkhead?

Is the Via Aqua an external or submersible?
What's the best submersible and the best external?

Am I right in assuming that I can just connect my pump to a split and run the hoses to the opposite corners for the returns?
Should I have a valve to be able to cut off the returns?


Any advice on a DIY top off?
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Old 05-30-2004, 08:51 AM   #10
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You could plug the bulkhead and use a submersible. They are not the quality of the externals and will add more heat to the water. They are much cheaper though. You can run a Mag Drive submersible externally...I can't say about the rest of them. An external pump will cost more, last longer, and run cooler and quieter. The Via Aqua pumps are submersibles.
IMO, the best submersible is the Mag Drive. Again, IMO, I like the Blueline externals.
You can split the return and you should have a valve on the returns and the drains. If you go with an external pump, I'd have a valve between the pump and the sump as well. That way, you can remove the pump without draining everything.
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