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Thread: Can Trichlor be OK in this situation?

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    Can Trichlor be OK in this situation?

    I just opened my pool yesterday. Everything seems fine, just some filtering needed over the next few days. It's still a little chilly here, so my water temp is only about 55deg, which is borderline for my SWG. Normally early in the year I have to add some CYA because of the dilution that occurs over the winter. My pH also tends to rise, so I add regular doses of MA.

    I'm going to be traveling alot for work the next few weeks and I'm looking to make the pool care as straightforward as possible for the wife. Based on what I've read, this seems like the ideal time to throw a few pucks in and let them do their thing. She can just monitor chlorine and pH during the week while I'm away. I was also thinking of having her use dry acid during this time, instead of MA, since it's easier to handle. I assume this limited use is nothing to worry about as far as sulfates are concerned.

    Does this all make sense or are there any other negative factors that I'm missing......

    As always, thanks to the contributors on here. You all have made my pool owning experience a true pleasure.
    27,000 gallon, 3M Quartz, SWG, Hayward EcoStar SP3400VSPVR (2HP variable speed pump), Pentair Quad DE filter[/color]

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    JasonLion's Avatar
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    Re: Can Trichlor be OK in this situation?

    Yes, that all makes sense. As long as you stay aware of your levels and don't do this all the time it should work out just fine.
    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

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    Richard320's Avatar
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    Re: Can Trichlor be OK in this situation?



    If you have room for the CYA and the pH needs to drop, trichlor could be a good solution. But without test results, the answer is Maybe, and that's final. Check out Effects of Adding Chemicals down near the bottom of PoolMath to see what each 8 oz puck will do to your chemistry.
    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: Can Trichlor be OK in this situation?

    Thanks for the quick response. Noted Richard...After I posted, I realized I should have mentioned that I will test and monitor throughout the process. I don't have a good set, yet, though. Yesterday, when I opened, I added some MA to bring the pH down some (was off the charts at first measurement), then shocked. I'll measure pH again when the chlorine comes down. I also was hesitant to do the CYA test with the water kinda murky, but it looks much better now. Will post when I have results......
    27,000 gallon, 3M Quartz, SWG, Hayward EcoStar SP3400VSPVR (2HP variable speed pump), Pentair Quad DE filter[/color]

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    Re: Can Trichlor be OK in this situation?

    I just went out and took some more measurements. pH was still off the scale high. FC was down to about 0.5. CYA was unmeasurable (double checked with some newer solution), which I assume explains the low FC.

    So, I'll bring the CYA up to the low end of the target range and continue to adjust pH and FC (added some of each just now). Seems like throwing a couple pucks in during this process would be a harmless way to add some constant level of chlorination.

    I guess my only question is whether
    27,000 gallon, 3M Quartz, SWG, Hayward EcoStar SP3400VSPVR (2HP variable speed pump), Pentair Quad DE filter[/color]

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    Re: Can Trichlor be OK in this situation?

    oops, need a proof reader.....

    The question was whether there can be any error in the CYA measurement at lower temperature. I don't want to find out that I added too much when it gets warmer.
    27,000 gallon, 3M Quartz, SWG, Hayward EcoStar SP3400VSPVR (2HP variable speed pump), Pentair Quad DE filter[/color]

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    duraleigh's Avatar
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    Re: Can Trichlor be OK in this situation?

    What are you testing with? You say you don't have a good kit. The temp error will be very minor, if at all, but you must have a decent kit to test it.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Can Trichlor be OK in this situation?

    I'm using the TF-100. I didn't mean to imply that I wasn't using a good kit. I'm very comfortable with the results when everything is balanced and the water is in the normal temperature range. I just prefer to verify if I can trust the results under these conditions. I think everything is OK, I just need to continue to monitor and adjust.....SOP.
    27,000 gallon, 3M Quartz, SWG, Hayward EcoStar SP3400VSPVR (2HP variable speed pump), Pentair Quad DE filter[/color]

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    Richard320's Avatar
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    Re: Can Trichlor be OK in this situation?

    If pH is way high and CYA is low, and you already have the pucks, use 'em up!
    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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