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Thread: Fiberglass Filter Media To Replace Sand

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    Fiberglass Filter Media To Replace Sand

    Here I am again. New sand filter installed last season but Day 10 of SLAM and just not filtering out the water (fast enough) for me. Somebody suggested replacing the sand with glass, claiming that it is faster and gets finer particles than even DE.

    Is anyone familiar with this? Here is a link to the product.

    https://www.amazon.com/FilterGlass-A...s+filter+media
    Vinyl IG 18x43 25,000 gallon
    Hayward Pro s244T 300 lb Sand (with occasional addition of clarifier)
    1.5 HP pump; Polaris 380 with booster pump; Hayward H400 gas heater
    TF-100 with SpeedSTIR

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    Re: Fiberglass Filter Media To Replace Sand

    I personally have had good experience with the Vitrogreen brand of the product.


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    borjis's Avatar
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    Re: Fiberglass Filter Media To Replace Sand

    Some people have, some have not.

    I had glass in the sand filter of my last home and it worked very well.

    My opinion is that it is equal to sand. For true finer filtering DE filters
    are where its at, but with more complicated cleaning procedures
    than a sand filter.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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    Re: Fiberglass Filter Media To Replace Sand

    borjis, I see you have the same filter as I do (s44T). Being in Pacific NW, do you open to green swamp every Spring? If so, how long does it take to filter everything out?
    Vinyl IG 18x43 25,000 gallon
    Hayward Pro s244T 300 lb Sand (with occasional addition of clarifier)
    1.5 HP pump; Polaris 380 with booster pump; Hayward H400 gas heater
    TF-100 with SpeedSTIR

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    borjis's Avatar
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    Re: Fiberglass Filter Media To Replace Sand

    Eilum, my current pool/house is a different place.

    There is regular sand in the S244T I have now. The other pool/house was a starite sand filter
    with glass media. I can tell you that when I slammed for a mustard algae outbreak there,
    in the final days of the slam, the water was cloudy/milky white from all the scrubbing i did.

    I ran that filter with glass media 24/7 and within 3 days the water was completely sparkling clear again.
    That pool was also bigger though 19,000 gallons.

    I have always kept my pools open year round and make sure chlorine levels are adequate
    by the time the water reaches 60 degrees, so I've never had a green swamp to deal with.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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    Re: Fiberglass Filter Media To Replace Sand

    Zeo isn't well liked here, but Ive had superb luck with it for the last 4 years or so.

    I get DE clarity without the backwash hassle.

    All of my De filters experienced accelerated pressure building after year 5 as the grids became harder and harder to clean.

    Happy filtering!

    UD
    20K Gallon Gunnite pool/900 Gallon in ground Spa/2HP WhisperflowSpa
    Pentair Master temp 400/Hayward Sand WZeobrite/Jandy RS-8 Aqualink/Jandy 2HP Epump
    12 - 4x10 Panels/Zodiac G3-T5 / BBB

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    Richard320's Avatar
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    Re: Fiberglass Filter Media To Replace Sand

    A sand filter will take out stuff too small to see with the naked eye, no problem. If your water won't clear up, it's probably not the filter's fault. It's more likely a chemistry issue.

    Use the search box up above for glass filter and you'll get a whole lot of hits. I come up with 6080....
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Fiberglass Filter Media To Replace Sand

    Thanks everyone. So if the cloudy water is cleared in 3 days, then I have got a problem. I am on Day 10 running the filter 24/7 with FC up above 24 and the pool is still cloudy.
    Vinyl IG 18x43 25,000 gallon
    Hayward Pro s244T 300 lb Sand (with occasional addition of clarifier)
    1.5 HP pump; Polaris 380 with booster pump; Hayward H400 gas heater
    TF-100 with SpeedSTIR

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    Mod Squad Texas Splash's Avatar
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    Re: Fiberglass Filter Media To Replace Sand

    So if the cloudy water is cleared in 3 days, then I have got a problem. I am on Day 10 running the filter 24/7 with FC up above 24 and the pool is still cloudy.
    I think we mentioned this in your other thread, but for this topic ... something we are always very careful to remind pool owners about is that every pool reacts differently to a SLAM based on:
    - Amount of algae and debris in the pool (hidden or otherwise unknown)
    - Consistency of the owner to maintain the proper FC
    - Testing accuracy of the owner to have a good CYA to start with
    - Amount of physical attention given to the pool (sweeping, brushing, vacuuming, etc)
    - Filter maintenance (rinsing, backwashing, etc)
    - Potential filter damage (i.e. lateral damage, torn grids(s), etc)

    So while one SLAM may take 4-5 days, others may take 2 weeks or more. There's no one simple formula. One thing that is very common though, especially in long SLAMs, it's easy to overlook the easy stuff. BY that I mean validating test results, inspecting all areas of the pool, even places that seem insignificant. I found algae under my poolside skimmer lid on occasion. Once a green pool transitions to a cloudy white or semi-blue/transparent pool, it's all about the fine details. SLAMs work, but it does take time and focus on those easily overlooked areas.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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  10. Back To Top    #10

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    Re: Fiberglass Filter Media To Replace Sand

    Ok. I really dont mean to repeat myself from thread to thread. This is because I was looking into the glass media. I am just eager to finish this SLAM and get the pool clear...
    Vinyl IG 18x43 25,000 gallon
    Hayward Pro s244T 300 lb Sand (with occasional addition of clarifier)
    1.5 HP pump; Polaris 380 with booster pump; Hayward H400 gas heater
    TF-100 with SpeedSTIR

  11. Back To Top    #11
    borjis's Avatar
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    Re: Fiberglass Filter Media To Replace Sand

    If you were looking in to glass to clear it faster....probably best to just stick with the sand you have.

    That isn't likely to be the reason the water isn't clearing up.

    The 3 days to clear i mentioned, that was at the point the SLAM was
    almost finished....the last part being clear water.

    I had no overnight FC loss & CC was 0 by that point.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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