Are they really that big?

Discussion in 'General Reef Topics' started by anpgp, Jul 28, 2011.

to remove this notice and enjoy 3reef content with less ads. 3reef membership is free.

  1. anpgp

    anpgp Dragon Wrasse

    Joined:
    Jun 30, 2009
    Messages:
    2,161
    Location:
    Denver, CO
    So I'm going to get my 40B drilled for an overflow and I have 1.5" PVC. The 1.5" bulkheads say they require a 2 3/8" hole :eek:. I realize that it will be bigger than the PVC, but an inch bigger seems like a lot to me. Is this correct? I would rather not drill myself and found a glass shop that will do it for $10 a hole.
     
    anpgp, Jul 28, 2011
    anpgp, Jul 28, 2011
    #1

    2. Click Here!

  2. sostoudt

    sostoudt Giant Squid

    Joined:
    Jul 9, 2008
    Messages:
    5,958
    Location:
    Chesterfield, VA
    sostoudt, Jul 28, 2011
    sostoudt, Jul 28, 2011
    #2
  3. anpgp

    anpgp Dragon Wrasse

    Joined:
    Jun 30, 2009
    Messages:
    2,161
    Location:
    Denver, CO
    Ok, just double checking. I'm using the 1.5" PVC for the overflow and getting a Mag 7, or 5, for the return. What size return pipe would you recommend?
     
    anpgp, Jul 28, 2011
    anpgp, Jul 28, 2011
    #3
  4. sostoudt

    sostoudt Giant Squid

    Joined:
    Jul 9, 2008
    Messages:
    5,958
    Location:
    Chesterfield, VA
    usually its like 1 inch I think, but it can be what ever you want.
     
    sostoudt, Jul 28, 2011
    sostoudt, Jul 28, 2011
    #4
  5. anpgp

    anpgp Dragon Wrasse

    Joined:
    Jun 30, 2009
    Messages:
    2,161
    Location:
    Denver, CO
    Ok, I was just trying to figure out what bulkheads to order. I'm ordering them and the Mag at the same time so I didn't know if I should just order all 1.5" ones or get something smaller for the return.
     
    anpgp, Jul 28, 2011
    anpgp, Jul 28, 2011
    #5
  6. sostoudt

    sostoudt Giant Squid

    Joined:
    Jul 9, 2008
    Messages:
    5,958
    Location:
    Chesterfield, VA
    usually you want the returns to be smaller then the overflow, because if they were the same size the return could easily put more water into the tank then the overflow could drain.

    note it can still do this even if its smaller too.
     
    sostoudt, Jul 28, 2011
    sostoudt, Jul 28, 2011
    #6

    7. Click Here!

  7. malac0da13

    malac0da13 Torch Coral

    Joined:
    Jan 14, 2009
    Messages:
    1,199
    Location:
    Walnutport, PA
    Check what size the magaz7 outlet is or what it calls for...I think its 3/4. My mag9 is 3/4 fittings but I think it calls for 1in lines for optimum for. Its really not hard to drill the holes but if your are only going to do one of each size I guess it would cost about the same as buying a bit. I got started drilling the glass when I bought a Glass-Holes overflow kit and drilled two holes for inch and a half bulkheads and I actually broke the tank...it was tempered glass and I wasn't sure and it was a free tank so I said wth and went for it. But after that I drilled like a dozen holes and haven't had a problem. My current tank has 6 holes in it lol. Just use lots of water, go slow, at medium to high rpm, and use a drill with a clutch in case of binding.

    Sent from my DROIDX using Tapatalk
     
    malac0da13, Jul 28, 2011
    malac0da13, Jul 28, 2011
    #7
  8. Seano Hermano

    Seano Hermano Giant Squid

    Joined:
    Apr 7, 2010
    Messages:
    10,056
    Location:
    Northwest Ohio
    The mag 7 pump has a 3/4" outlet. So I would use 3/4" PVC for your entire return line. Why are you going with 1.5" overflow lines? That's pretty bug for a 40B...
     
    Last edited: Jul 28, 2011
    Seano Hermano, Jul 28, 2011
    Seano Hermano, Jul 28, 2011
    #8
  9. malac0da13

    malac0da13 Torch Coral

    Joined:
    Jan 14, 2009
    Messages:
    1,199
    Location:
    Walnutport, PA
    Piece of mind lol? I have two 1.5 for my overflow with a mag9 return. It was an overflow from when I had a much bigger return but was still over sizes for that I think. I think the overflow was rated for 1500 gph.

    Sent from my DROIDX using Tapatalk
     
    malac0da13, Jul 28, 2011
    malac0da13, Jul 28, 2011
    #9