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Results 1 to 7 of 7
  1. Default 850 gph, too much?


    0 Not allowed!
    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.

  2. #2

    Join Date
    Feb 2010
    Location
    Ypsilanti, Michigan
    Posts
    5,726

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    A lovely red rose for you to enjoy ... - mermaidwannabe for the help - smaug Happy Father's Day! - Aminax awesome tank in TOTM - Lady Hobbs Good guess! - Lab_Rat 
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    Cancer - Epilepsy - Foster Care - Gynecological Cancer - Rett Syndrome - Brhino 

    Default


    0 Not allowed!
    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: build in progress
    75 gallon community tank: tetras, danios, corys, platies, otos, pearl gouramis, bristlenose pleco, assassin snails, red cherry shrimp, bamboo shrimp
    70 gallon growout tank: clown loaches, sailfin pleco
    60 gallon goldfish tank: fancy goldfish
    29 gallon frog tank: 1 bullfrog
    10 gallon and 5.5 gallon betta tanks: 1 male betta each, sometimes snails

  3. Default


    0 Not allowed!
    It would work, and you could use the check valve to decrease the gph too.
    14g Biocube Tank
    http://www.aquaticcommunity.com/aqua...ad.php?t=98216
    5.5g Red Cherry Shrimp

    55g Community tank 1 Platy,6 gold barbs, Small Clown Loach, Asian Bumblebee, 1 Red-tail Shark, 2 Albino Plecos

  4. #4

    Default


    0 Not allowed!
    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/"]

  5. #5

    Default


    0 Not allowed!
    Forgot to post a pic of a bypass.

    On the return pump in the bottom right hand corner of the pic, you will see I have tee'd off three lines from the return pump. One line goes to a media reactor, one line goes up to the tank, and the last one just let water flow through back into the same compartment of the sump, almost in a endless loop. That reduces the flow back up into the tank and is adjust by using the ball valve on the bypass line

    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/"]

  6. Default


    0 Not allowed!
    Quote 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 02:26 AM.

  7. #7

    Default


    0 Not allowed!
    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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