Overflow and Return

Discussion in 'General Reef Topics' started by nemo723, Oct 30, 2010.

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  1. nemo723

    nemo723 Astrea Snail

    Joined:
    Oct 21, 2010
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    Tampa Bay
    I have a 65g drilled tank with a 1 1/4 overflow bulkhead and a 3/4 inch return. I am confused as to why they are different sizes? Please explain. The tank came with a 115 V 60HZ 65W 1.5 AMP return pump. Will that be enough? Thanks!
     
    nemo723, Oct 30, 2010
    nemo723, Oct 30, 2010
    #1

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  2. 2in10

    2in10 Super Moderator

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    Sparks, NV
    The water going through the drain is being moved by gravity and the return is be moved mechanically. Gravity needs a larger opening to be effective. The pump should be fine.
     
    2in10, Oct 30, 2010
    2in10, Oct 30, 2010
    #2
  3. AZDesertRat

    AZDesertRat Giant Squid

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    The overflow is gravity and the return is pressurized so flows much more water than a gravity overflow thus the two different sizes.
     
    AZDesertRat, Oct 30, 2010
    AZDesertRat, Oct 30, 2010
    #3