Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Using Trichlor to Raise CYA

  1. Back To Top    #1

    Join Date
    Mar 2016
    Location
    Central CT
    Posts
    96

    Using Trichlor to Raise CYA

    You guys have done too good of a job converting me. Last year my CYA was my first year with the pool. The CYA was crazy high from the prior owners, so I did some partial refills to get it down to a manageable number and used liquid shock for all my chlorine needs last year. As such I've never actually used pucks, so I'm going to ask some really stupid questions.

    My CYA is currently under 30. I have some leftover trichlor feeder tabs (marshmallow sized things) from the prior owner. Are they still OK to use?

    I played with the pool calc and figured out how many ounces of trichlor it takes to raise my CYA by one. Do I just let the pucks hang out in the floater until they dissolve and add more as needed until they all dissolve? How much would you add at a time to make sure you don't overshoot anything?

    How do I know how much to add to keep my chlorine at an appropriate level, or should I just go test and add liquid chlorine as needed?

    Added fun I got two inches of rain two weeks ago so I had to let some water out, We're supposed to get 2 more inches tomorrow. My water is dropped back down under 60 F this week in case that matters for some reason.
    20K gallon 32 ft x 16 ft vinyl liner in ground pool || sta-rite modular media P150 cartridge filter || .75 HP whisperflo dual speed pump
    Taylor K-2006 Test Kit. || Dohney's Discovery Robot

  2. Back To Top    #2
    JoyfulNoise's Avatar
    Join Date
    May 2015
    Location
    Tucson, AZ
    Posts
    14,077

    Re: Using Trichlor to Raise CYA

    I just used a bunch of 1" trichlor spa tablets (0.5 oz/tablet) to raise my CYA up because I only had about 30oz of granular stabilizer left. They were over 4 years old. Worked just fine to get me the last 10ppm CYA I needed....
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

  3. Back To Top    #3

    Join Date
    Nov 2016
    Location
    Melbourne, FL
    Posts
    139

    Re: Using Trichlor to Raise CYA

    I say, use 'em if you got 'em. I have a half full bucket of trichlor tablets (around 20lbs) left over from before adding my SWG. I throw a few in a floater after backwashing and refilling to bring my Cl and CYA up. The most important part is to stay on top of your chemistry.

    Quote Originally Posted by JoyfulNoise View Post
    I just used a bunch of 1" trichlor spa tablets (0.5 oz/tablet) to raise my CYA up because I only had about 30oz of granular stabilizer left. They were over 4 years old. Worked just fine to get me the last 10ppm CYA I needed....
    15K Gal Gunite Pool, White Pebble Surface (unkown), Pentair Intelliflo Variable Speed Pump, SunTouch automation, sta-rite plm100 filter, Hayward AquaRite AQR-15 SWG.

Posting Permissions

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