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Thread: IG Return Ports/Eyeballs ??

  1. Back To Top    #1

    Join Date
    May 2012
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    North of Charlotte, NC
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    IG Return Ports/Eyeballs ??

    I'm thinking about lowering the size/type of return jets to help circulate my pool a little better, will dropping the port jets down to 1/2"or 3/8" from 3/4" put to much back pressure on my pump to even worry about it? I'm assuming the different back pressure would change my clean filter pressure (for 25% DP for BW purposes) as well ? Has anyone had better luck with certain sizes or different types like the slotted eyes or even the rubber nozzle type(or would these rubber nozzle ones be good on the jet at the steps) ?



    24,000 Gallon Vinyl Grecian IG,Triton2 Sand Filter / Pentair Super Flo 1 HP Dual Speed Pump ,
    Stenner Peristaltic Pump Injection w/15 gal drum,Stubbed up supply/return for future solar panels :)
    TF100 Rocks !! Pool School....

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    JasonLion's Avatar
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    Re: IG Return Ports/Eyeballs ??

    Smaller eyeballs with get you more jet pressure but they will also noticeably reduce the amount of water your pump moves through the filter and decrease your overall system efficiency.

    In most situations you can get better overall circulation using larger eyeballs and careful aiming of the jets to produce the best possible water movement. The details depend a great deal on the specific placement of your returns. You want to create consistent water movement around in a circle (well, sometimes other shapes, depending on the pool) and encourage mixing of deep and shallow water. In some situations peak jet speed from small eyeballs can help make that happen, but in most cases the reduction in total water flow that comes from the smaller opening cancels out any advantage.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Join Date
    May 2012
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    North of Charlotte, NC
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    Re: IG Return Ports/Eyeballs ??

    Well I'm glad I asked what originally I thought was a stupid question prior to just going out and replacing my 3/4" eyeballs Looks like I'll have to get in my sparkling clean pool and do some adjustments till I get er' right. Thanks for the good info Jason....
    24,000 Gallon Vinyl Grecian IG,Triton2 Sand Filter / Pentair Super Flo 1 HP Dual Speed Pump ,
    Stenner Peristaltic Pump Injection w/15 gal drum,Stubbed up supply/return for future solar panels :)
    TF100 Rocks !! Pool School....

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    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    Re: IG Return Ports/Eyeballs ??

    I would actually go the other way and change them to 1". They will move a lot more water than they do now.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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