Return Pump for 75 Gallon Tank and 20 Gallon Sump

Discussion in 'Lighting, Filtration & Other Equipment' started by ltkenbo, Jul 19, 2013.

  1. ltkenbo

    ltkenbo

    Joined:
    Aug 22, 2009
    Messages:
    625
    Likes Received:
    18
    Location:
    Bloomington, MN
    I am trying to decide on which return pump to use for my current 75 gallon build. I've looked around a lot and it seems there are a lot of answers like "well it depends on your overflow." Well in my case that's wrong because my overflow has a lot of headroom (it's a custom glass-holes.com one that has max 1500 gph!), so I can get pretty much whatever pump I want up to that limit (which is way too high).

    So how many GPH rated pump should I get? I was thinking a mag drive 9.5 or Quiet One 4000, but the girl at my LFS told me that's probably even a little bit too high. I ran a mag drive 7 on my 55 gallon with a 10 gallon sump, and so I figured a 9.5 might be good. What do you think?

    Another question, I have 2 3/4" return kits (each one is rated to like 1100 gph), should I install both just to leave myself headroom (and allow very low resistance) or just one?
     
    ltkenbo, Jul 19, 2013
    #1
    1. Advertisements

  2. ltkenbo

    MitchReef reef noobie, since 1986

    Joined:
    Mar 14, 2013
    Messages:
    645
    Likes Received:
    62
    Location:
    Oviedo, FL, home of the Oviedo chickens
    The QuietOne pumps are okay if you want a submersible pump....MagDrive pumps are bullet proof but they throw out some heat...and that all warms the water up....

    I prefer external pumps myself.....completely....
     
    MitchReef, Jul 19, 2013
    #2
    1. Advertisements

  3. ltkenbo

    ltkenbo

    Joined:
    Aug 22, 2009
    Messages:
    625
    Likes Received:
    18
    Location:
    Bloomington, MN
    Which size/flow rate would you recommend for my size tank and sump though? Yeah I've had a Mag before, I've thought about trying the Quietone pumps
     
    ltkenbo, Jul 19, 2013
    #3
  4. ltkenbo

    lilmatty5dimes

    Joined:
    Oct 12, 2010
    Messages:
    1,626
    Likes Received:
    283
    Location:
    Cocoa, FL
    You don't want more 10x going thru your sump. The longer your water is in your sump the more it's getting skimmed and getting cleaner. A mag 9.5 would be good.
     
    lilmatty5dimes, Jul 19, 2013
    #4
  5. ltkenbo

    ltkenbo

    Joined:
    Aug 22, 2009
    Messages:
    625
    Likes Received:
    18
    Location:
    Bloomington, MN
    Ok cool, what about the return, should I plumb one or two?
     
    ltkenbo, Jul 19, 2013
    #5
  6. ltkenbo

    lilmatty5dimes

    Joined:
    Oct 12, 2010
    Messages:
    1,626
    Likes Received:
    283
    Location:
    Cocoa, FL
    Huh??
     
    lilmatty5dimes, Jul 19, 2013
    #6
  7. ltkenbo

    ltkenbo

    Joined:
    Aug 22, 2009
    Messages:
    625
    Likes Received:
    18
    Location:
    Bloomington, MN
    The question I asked before

     
    ltkenbo, Jul 19, 2013
    #7
  8. ltkenbo

    MitchReef reef noobie, since 1986

    Joined:
    Mar 14, 2013
    Messages:
    645
    Likes Received:
    62
    Location:
    Oviedo, FL, home of the Oviedo chickens
    Use one pump that provides the 5 - 10X turnover through your sump. Do you have two overflows or just one? If two overflows split the return flow between the two return risers in your tank. If only one overflow then just use one. The reduction in flow will be negligible in the reality of the situation.
     
    MitchReef, Jul 19, 2013
    #8
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.