External Pump

Discussion in 'New to Reefing' started by blando, Dec 25, 2013.

  1. blando

    blando

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    Hello,

    I am looking for an external pump. This is only for a 20 gallon tank. The ones i am finding are like 100 or more and is pushing to much GPH. I believe for a 20 gallon tank i only need about 100 GPH. I heard Mag Drive has some external but i can not find anything. Any ideas?
     
    blando, Dec 25, 2013
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  2. blando

    BL1 ............. Moderator

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    BL1, Dec 25, 2013
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  3. blando

    blando

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    Yeah i saw that one but the frag tank is only 3ft to 4ft high from the pump. I think 500 is to much for that.
     
    blando, Dec 25, 2013
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  4. blando

    blando

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    blando, Dec 25, 2013
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  5. blando

    BL1 ............. Moderator

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    BL1, Dec 25, 2013
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  6. blando

    BL1 ............. Moderator

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    Also by their head loss chart at 3-4' you're looking at the pump I listed giving you about 335-270gph. That's with straight piping, any elbows or valves will further cut down that flow rate.
    Even at 335 I don't think you're pushing it for your tank. In my old 28g tank I was running two 300gph return pumps and those only had 6" of head-loss.
     
    BL1, Dec 25, 2013
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  7. blando

    blando

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    Yea true. I can also buy a ball valve and just adjust it if it is to much. Thank you BL1! Merry Xmas!
     
    blando, Dec 25, 2013
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  8. blando

    kbuser92 Breeder

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    +1 Brian. I have a koralia 425 and another on the way in my 20 long, so I doubt 25-400 at the surface would do any damage. Just get the return in the water pointed up and you've got some great surface agitation. I also have a HOB with rubble pushing probably 120-150 gph and don't see any negative side effects.
     
    kbuser92, Dec 25, 2013
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  9. blando

    BL1 ............. Moderator

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    Yup sure can. You're welcome and Merry Christmas!
     
    BL1, Dec 25, 2013
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  10. blando

    Northstar24 The Tang Herder

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    Just make sure that valve is on the OUTPUT side of the pump, not the intake
     
    Northstar24, Dec 26, 2013
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  11. blando

    blando

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    Awesome. Thanks everyone for your advise. Hope everyone Xmas was great :) .
     
    blando, Dec 26, 2013
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