Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Do you ever need to change filter sand?

  1. Back To Top    #1

    Do you ever need to change filter sand?

    I purchased my house about 3 years ago. It has an in-ground pool that was built in 1980. It has a sand filter, which I believe to be a Hayward S200. I can't find a model number, but it looks exactly like the pictures I find online. I have no way to be sure, I believe that this is the the original filter, which makes it over 30 years old. It doesn't seem to filter very good and I suspect that the sand may be caked and/or channeled. So I was planning on taking the top off and doing the garden hose thing to break up and clean the sand.

    Is it possible that this filter still has the original sand in it? Is there ever a time when you'd want to change the sand? I'm only asking because if I'm going to go through the trouble to unbolt every one of the 24 bolts to take the lid off, it might make sense to do a complete sand change instead of trying to clean the old sand which could contain god-knows-what and might not even come totally clean.
    8500 gal, fiberglass, 3/4HP SuperFlo pump, sand filter, Raypak heat pump, Intellichor IC20 SWG (not using yet), Taylor K-2006 FAS-DPD test kit

  2. Back To Top    #2
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Do you ever need to change filter sand?

    Welcome to TFP!

    You do not have to change the sand unless you are doing a Baquacil Conversion. If after cleaning the sand and it is still caked and or channeled then ok... but for the most part sand never needs changed as it does not go bad. Clean the sand and see how it looks. If you're not sure and still have questions, take pics of it, post your questions and we'll get you on your way.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  3. Back To Top    #3

    Re: Do you ever need to change filter sand?

    I know sand doesn't go bad, but it could get coated with oils that don't some off with water or contaminated with particulate matter that doesn't float and can't be easily flushed to the top. That's my main concern, I guess.

    I'm going to try to clean it this weekend and I'll post back if I have any issues.

    Thanks!
    8500 gal, fiberglass, 3/4HP SuperFlo pump, sand filter, Raypak heat pump, Intellichor IC20 SWG (not using yet), Taylor K-2006 FAS-DPD test kit

  4. Back To Top    #4
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Location
    Central Minnesota
    Posts
    5,079

    Re: Do you ever need to change filter sand?

    Search for deep clean sand filter here and you should find detailed info on cleaning.

    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

  5. Back To Top    #5
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Do you ever need to change filter sand?

    Welcome!

    Thirty years old? I wonder if the little bits you lose with each backwash have added up over time to where you're now low on sand?

    Well, you'll find out when you open things up, won't you? Wear old clothes when you do it.
    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!

  6. Back To Top    #6

    Re: Do you ever need to change filter sand?

    I didn't have much luck with the "deep cleaning". The sand was fairly filthy with what looks like lots of small bits of decomposed leaves.

    My filter is the S200 and it has the in/out lines on the side. I wasn't able to find a valve position that allowed me to fill the filter with water and have it overflow like in the video. The water either drained back into the pool, into the pump, or out the waste line. I did the best I could but after a while I gave up and put the dome back on since it didn't seem like the bits of leaves wanted to float.

    I'm going to see if it performs any better this season, and if not, I'm going to pull the top half off the filter and do a complete sand change at the end of the season.
    8500 gal, fiberglass, 3/4HP SuperFlo pump, sand filter, Raypak heat pump, Intellichor IC20 SWG (not using yet), Taylor K-2006 FAS-DPD test kit

  7. Back To Top    #7
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Do you ever need to change filter sand?

    It probably doesn't matter at this point, but he water doesn't need to flow out the top of the filter, just somewhere higher than the top of the sand. From your description, setting the valve so water flowed out the waste port is your best choice.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •