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850 gph, too much?
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My question is about the pump used to push the water up from the sump. the pump im looking at is used, rebuilt and near here I live so ild like to buy it, its 850 gph. By cliffs article on sumps I need about 725 gph, I think. Tell me what you think. Three feet of head(distance between sump and tank) at least two 90's two 45's, one check valve, ten gallon sump, 29 gallon tank. I'm scared to put too much power on this as it will cycle water through the sump faster, and dont know much if it will be too much current. Not sure what the head rating on the pump already is.
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I don't know a lot about the flow rate calculations, I'm just getting into it myself... but I do know that if the flow rate on your pipe is too high, you can put a valve on the output and adjust it down.
300 gallon mega tank: sailfin pleco, clown loaches, silver dollars, roseline sharks, congo tetras, new world cichlids
125 gallon office tank: Africian cichlids, synodontis catfih
75 gallon community tank: bolivian rams, black skirt tetras, dwarf neon rainbowfish, corys, harlequin rasboras, otos, bristlenose and bulldog plecos, assassin snails, various shrimp
60 gallon goldfish tank: fancy goldfish
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It would work, and you could use the check valve to decrease the gph too.
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You'll be fine.
Assuming your pump has 850 gph at 0 head height, your actual flow through the sump and tank will be closer 400 gph. Depending on your skimmer, you might want to adjust that a little. That can be easily done by plumbing in a bypass to divert some of the flow from the return line back into the return pump compartment. I don;t like using valve on return pumps as that cause a lot of excess and avoidable ware and tear on the pump, but that's my preference tho.
http://saltwater.aquaticcommunity.co...umbing-basics/
If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
"Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
Fishless Cycle Cycling with Fish Marine Aquarium Info [URL="http://saltwater.aquaticcommunity.com/"]
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 Originally Posted by Brhino
I don't know a lot about the flow rate calculations, I'm just getting into it myself... but I do know that if the flow rate on your pipe is too high, you can put a valve on the output and adjust it down.
Not entirely sure what you mean Brihno, by flow rate on the pipe being too high, Are you saying that 850 gph is too high possibly for 1/2 inch. that 1/2 inch is not big enough to pump 850 through without additional stress on the motor. I'm asking because I feel like I missed something somewhere lol.
I see on Cliff's Article about plumbing basics that 1/2 in is suited up to 840, at a given pressure, but that it has a maximum flow of 1260. Is this to say that in order to pump that much, you have to exceed 100 psi? This may be irrelevant because I think the fittings for the pump are 3/4,but I like to ask ?s so I understand. I like to be in the ball park, not outer space when doing something worth while
Thanks for all your responses and help
BTW Cliff, you're awesome as always
Last edited by Onefish-twofish; 12-20-2012 at 03:26 AM.
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I think Brhino was suggesting that if the flow rate war too high for your liking, or if you want less flow than 850 gph, then you could slow down the flow rate by using a valve.
If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
"Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
Fishless Cycle Cycling with Fish Marine Aquarium Info [URL="http://saltwater.aquaticcommunity.com/"]
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