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Thread: How to measure DE without a DE-specific scoop or coffee can

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    Join Date
    Jul 2011
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    Bedford, NH
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    How to measure DE without a DE-specific scoop or coffee can

    I have a Hayward-Perflex DE filter. Last week I drained the filter and refilled the DE, but I wanted to make sure I did it right.

    Filter says it needs 4lbs, I've read you should refill with 80% of that, or 3.2lbs. What I did was I took an old plastic cup (think gas station big gulp) and filled it to the top with DE. Then I placed it on a postal scale I had, and it read "9oz". 3.2lbs is 51.2oz, so I divided that by 9, which came out to roughly 5.5 of those big gulps. That's what I put into the filter.

    Did I do this right?

    I'm battling some cloudy water as a result of terrible chemical balance (I'm new here and making progress using BBB), but wanted to make sure my DE regeneration wasn't hindering my efforts.
    18' round above ground, vinyl liner, 48" deep (flat), Confer Step1 steps. Approximately 7600 gallons. Waterways/Proline FC075 cartridge filter. 75GPM (71 minute complete cycle), 75 sq ft filtration area.

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    Mod Squad Bama Rambler's Avatar
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    Re: How to measure DE without a DE-specific scoop or coffee

    Yes, weighing it is the best way. As long as you're close it'll be fine.
    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
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    Re: How to measure DE without a DE-specific scoop or coffee

    Assuming that the 9 oz is after you subtracted the weight of the empty cup you should be fine.

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    Re: How to measure DE without a DE-specific scoop or coffee

    Quote Originally Posted by charlie_nj
    Assuming that the 9 oz is after you subtracted the weight of the empty cup you should be fine.
    Yep...tared the scale out with the empty cup. Thanks all!
    18' round above ground, vinyl liner, 48" deep (flat), Confer Step1 steps. Approximately 7600 gallons. Waterways/Proline FC075 cartridge filter. 75GPM (71 minute complete cycle), 75 sq ft filtration area.

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