Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: sand filter issues-need some help!

  1. Back To Top    #1

    sand filter issues-need some help!

    Just received a call from the caretaker of a rental home I own. Last week there was an algae bloom in spite of ph and chlorine being correct. Did a "super shock" treatment and looks like the algae has died (brownish color instead of green) but the sand filter is not clearing it up. Its a Triton II TR-60, not sure of age or age of sand. Filter is not really gaining pressure, not much coming out during backwashing. In addition, the multiport valve seems to be acting up as there is a flow from the backwash pipe when the port is set to filter.

    Seems like this is a good indication that the spider gasket is not working right. Can there be enough leaking past the gasket where it would totally bypass the filter? Or is it likely that there are multiple problems like sand channeling, worn sand, or needing a flocculent for the algae?

    He is going to inspect the spider gasket as it seems that it would be wise to replace it anyway. Any thoughts about how to troubleshoot? I am 2500 miles away and can't check on it.

    Any help would be appreciated...

    Thanks

    Bob
    Bob W; 30,000 gal inground, about 30 years old
    1 1/2 HP 2 speed pump; single skimmer opening and bottom drain; single ball valve controlling both
    Inground spa; about 400 gallons; 2 HP StaRite pump, Jacuzzi cartridge filter, Hayward propane heater

  2. Back To Top    #2

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: sand filter issues-need some help!

    Welcome to TFP!!

    Checking the spider gasket would be my first move.

    Once that is sure to be good, see if the problem persists. If it does, we'll help you narrow down the problem.
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  3. Back To Top    #3

    Re: sand filter issues-need some help!

    My guy says that is the problem...gasket was all bunched up! Thanks for the confirmation. Another quick question if I may...I understand the gasket needs to be contact cemented in place. If so, any special cement? Or will regular contact cement work?

    Thanks in advance

    Bob
    Bob W; 30,000 gal inground, about 30 years old
    1 1/2 HP 2 speed pump; single skimmer opening and bottom drain; single ball valve controlling both
    Inground spa; about 400 gallons; 2 HP StaRite pump, Jacuzzi cartridge filter, Hayward propane heater

  4. Back To Top    #4
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: sand filter issues-need some help!

    People have used all kinds of cement to hold the spider gasket in place.

    Regular contact cement will work fine. With contact cement, you have to be real careful about placement the first time because there's no moving it once it makes contact.
    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

  5. Back To Top    #5

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: sand filter issues-need some help!

    I don't use cement to 'glue' the gasket down!

    Unless there is a problem with the channels the gasket sits in, there is no need for it!! If there is a problem with the channels, gluing the gasket in will serve as a 'band-aid' until you can replace the multiport.

    However, that's just 20+ years of experience talkin'
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

Posting Permissions

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