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Old 05-18-2011, 02:23 AM   #1
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sump return rate?

I am planning on adding a sump to my 55gal in the near future, I really like the idea of the added water volume and keeping inverts my puffer would normally eat. I would also like to add corals eventually so I figure a sump is a good place to start. I currently have 2 HOB filters and canister filter with a total filtering capacity of about 800 gph. Is that enough flow through my tank?

I really hate my canister it’s a pain in the butt to clean and Im pretty sure it’s keeping my nitrates high also don’t like my HOBs down spouts. So Im getting ready to get this sump on the road.

How many gph’s would I need for the return pump to keep enough flow in my tank? Would I need one that does 800gph? I have a koralia 750 gph powerhead that I am planning on adding and a HOB skimmer. I was planning on having only 3 compartments in my sump; in, fuge and return, since my skimmer is an HOB.

thanks
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Old 05-18-2011, 02:32 AM   #2
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I'm kinda a novice, but 750 is plenty. It all depends on you how many times you want your turn over rate, at 750 gph, the water should cycle through your tank 13 times per hour. thats a little high IMO, so I would say drop down to like a 320 and that will give you 5 cycles an hour, for sure since you'll lose about 20bgph pushing the water back up.
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Old 05-18-2011, 01:33 PM   #3
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I have a 60gal and my return pump is 700 gal/h. It was picked by the owner of the store i buy my stuff from and he has some very successful reef tanks for years...that should be plenty
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Old 05-18-2011, 04:03 PM   #4
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I'm kinda a novice, but 750 is plenty. It all depends on you how many times you want your turn over rate, at 750 gph, the water should cycle through your tank 13 times per hour. thats a little high IMO, so I would say drop down to like a 320 and that will give you 5 cycles an hour, for sure since you'll lose about 20bgph pushing the water back up.
You want around 10x tank size
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Old 05-18-2011, 04:09 PM   #5
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So I'm probably looking for something with around 650gph since I'll loose some pumping the water back up. Anyone have suggestions for good reliable pumps?
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Old 05-18-2011, 04:12 PM   #6
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REMEMBER you need to size the pump to the drain pipe size from the overflow.
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Old 05-18-2011, 04:13 PM   #7
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If you have a single overflow at 800gph would a 1000 gph pump be about right?

Sorry to jump in, but I am literally trying to think this out right now and just saw this thread again.
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Old 05-18-2011, 04:23 PM   #8
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I have a 55g with a 20g sump. I have 3 Hydor 2's. I used to have a Mag Drive 7 for my return I was doind some research on Nitrates and ran across someone that dropped to a Mag drive 3 and there nitrates dropped. The conclusion they came too was the water was circulating faster than the skimmer could filter it. I always had a loud suction in my overflows and to battle that I decided to drop down my MAG Drive to a Mag Drive 3 I like the flow better of the smaller pump and added powerhead. Not sure if the skimmer theory is true or not but my nitrates are never above 5ppm and my skimmer pulls more junk
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Old 05-25-2011, 02:50 PM   #9
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I have a 55g with a 20g sump. I have 3 Hydor 2's. I used to have a Mag Drive 7 for my return I was doind some research on Nitrates and ran across someone that dropped to a Mag drive 3 and there nitrates dropped. The conclusion they came too was the water was circulating faster than the skimmer could filter it. I always had a loud suction in my overflows and to battle that I decided to drop down my MAG Drive to a Mag Drive 3 I like the flow better of the smaller pump and added powerhead. Not sure if the skimmer theory is true or not but my nitrates are never above 5ppm and my skimmer pulls more junk
I dont think the flow would affect the skimmer.
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Old 05-25-2011, 02:51 PM   #10
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If you have a single overflow at 800gph would a 1000 gph pump be about right?

Sorry to jump in, but I am literally trying to think this out right now and just saw this thread again.
All depends on the head!!
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