Temporary trichlor question....

thefloatqueen

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Dec 24, 2018
962
Columbus, Ohio
Pool Size
7500
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Liquid Chlorine
Hi everyone! If my CYA is 40 (just BARELY over 40...a couple lines above the 40 mark lol), how many trichlor pucks can I get away with using until my liquid chlorine arrives in less than a week? I really do NOT want to increase my CYA much. They are the 3” (8 oz.) ones. I have two individual ones and a 3” floater to use temporarily. I know it’s a rip-off but I only plan on putting them in the floater for about a week. Do you think I could get away with just using one or is that not enough? I only have half a gallon of 6% bleach left and our stores are completely wiped out so I’m saving that for after the heavy rain we have coming in a couple days. I also have Dichlor granules but I know that has even more CYA than trichlor. Any advice? My 12.5% liquid chlorine should be arriving in about 5 to 6 days. FC is currently 5 ppm and it’s going to be fully sunny and warm today and tomorrow! Ahhhh! Thanks in advance!!

Today’s Numbers
FC: 5.0
CC: 0.0
pH: 7.7
TA: 80
CYA: 40
Water Temperature: 55 degrees Fahrenheit as of 9 AM. It will likely hit 60 or slightly higher today and tomorrow.1F44389E-A909-4009-B124-56D3FB5B1852.jpeg
 
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mknauss

Mod Squad
TFP Expert
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May 3, 2014
37,112
Laughlin, NV
Pool Size
6000
Surface
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Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Use your app. Effects of Adding Chemicals.
 
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thefloatqueen

Bronze Supporter
Dec 24, 2018
962
Columbus, Ohio
Pool Size
7500
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Vinyl
Chlorine
Liquid Chlorine
Use your app. Effects of Adding Chemicals.

Will do! Do you think they will even fully dissolve in the floater in 6 days? I haven’t used pucks since I had a smaller “Easy Set” Intex inflatable ring pool that held about 2000 gallons (before I discovered TFP, obviously lol). I included a photo of one of the individual pucks above.
 
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JJ_Tex

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Jul 17, 2019
2,321
Prosper, TX (DFW)
Pool Size
13000
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Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
I used a floater in my pool + 4 pucks in the winter since my swcg was turned off and I had little to no CYA (new build). The pucks would last about a month before they fully dissolved.
 
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mknauss

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May 3, 2014
37,112
Laughlin, NV
Pool Size
6000
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Pentair Intellichlor IC-40
The pucks will dissolve very slowly in cold water. Tie the floater near the return so you have some water flow past it. That will help dissolve them.

If you buy pucks in the future, do not get those. Get plain trichlor ones. Hard to say what other things those have. They have some kind of clarifier (glue) and something else not listed.
 
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thefloatqueen

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Dec 24, 2018
962
Columbus, Ohio
Pool Size
7500
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Vinyl
Chlorine
Liquid Chlorine
Shoot! I just realized the pucks have 3.5% zinc sulfate in them! I have not put them in the pool yet. Should I avoid or is one puck okay? Would dichlor be the safer bet?
 

thefloatqueen

Bronze Supporter
Dec 24, 2018
962
Columbus, Ohio
Pool Size
7500
Surface
Vinyl
Chlorine
Liquid Chlorine
The pucks will dissolve very slowly in cold water. Tie the floater near the return so you have some water flow past it. That will help dissolve them.

If you buy pucks in the future, do not get those. Get plain trichlor ones. Hard to say what other things those have. They have some kind of clarifier (glue) and something else not listed.
Gotcha! Those were the only ones available individually wrapped. They didn’t have the 99% trichlor ones I usually see. If I wanted those, I would’ve had to buy larger quantities and I only need something to get by for about 6 days until the liquid chlorine arrives.
 

mknauss

Mod Squad
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Bronze Supporter
May 3, 2014
37,112
Laughlin, NV
Pool Size
6000
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Fiberglass
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SWG Type
Pentair Intellichlor IC-40
One or two of them is OK. Just do not buy more.

Dichlor is fine. Though you do not need FC right now. Test every other day or so and add when needed.
 
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mknauss

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May 3, 2014
37,112
Laughlin, NV
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6000
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Fiberglass
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SWG Type
Pentair Intellichlor IC-40
I get a 5# bucket of plain pucks at Home Depot or Lowes. They are individually wrapped. I use them when I go on extended trips to add acid to our pool.
 
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thefloatqueen

Bronze Supporter
Dec 24, 2018
962
Columbus, Ohio
Pool Size
7500
Surface
Vinyl
Chlorine
Liquid Chlorine
Those tabs in the picture contain zinc (listed on the label), which is a metal that can eventually cause stains.
That was my concern. I would only be using one or two at most in my floater for 5-6 days. I’m hoping just throwing one in there will be sufficient (it says one puck treats up to 10,000 gallons....my pool is 7,000).
 

thefloatqueen

Bronze Supporter
Dec 24, 2018
962
Columbus, Ohio
Pool Size
7500
Surface
Vinyl
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They were the only individual tablets available. I would have bought the regular 99% trichlor ones if they were available. Would one really cause any damage?
 

JamesW

TFP Expert
Mar 2, 2011
24,112
Any metal is best avoided. I don't know too much about zinc. I suspect that a small amount probably wouldn't be a big problem, but I would always avoid metal as much as possible.
 
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thefloatqueen

Bronze Supporter
Dec 24, 2018
962
Columbus, Ohio
Pool Size
7500
Surface
Vinyl
Chlorine
Liquid Chlorine
Any metal is best avoided. I don't know too much about zinc. I suspect that a small amount probably wouldn't be a big problem, but I would always avoid metal as much as possible.
Thanks, James! To stay on the safe side, I may just use dichlor and keep a close eye on my CYA levels. Hopefully all the rain headed our way will dilute the unintentionally added CYA a little bit.
 

rnjw

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LifeTime Supporter
May 19, 2014
35
Pittsburg, CA
I too bought
CLOROX POOL&SPA XTRA BLUE 3 INCH LONG LASTING CHLORINATING TABLETS
to chlorinate while waiting to get bleach. Costco has sporadic supplies and I have not found any in several weeks.
I placed 2 pucks in the skimmer and noted zero chlorine and CH for several days. PH was high. Made a makeshift floater using a bleach bottle with holes in the bottom suspended from a blow up toy. Yesterday I finally placed 3 new pucks in the skimmer plus into the floater. This morning I have CL 5+ CH 100 PH 7.1.

Pool water temp is still around 70. Not quite swimming yet.
 

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rnjw

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May 19, 2014
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Pittsburg, CA
FYI, went to Costco today and got a case of their latest version "Performance Bleach" It is now 7.55 % sodium hypochlorite and 92.45% other ingredients. Same old 2015 SDS info.
And, BTW, price is now $2 higher. This is in Antioch, CA
 

mknauss

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May 3, 2014
37,112
Laughlin, NV
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Pentair Intellichlor IC-40
Costco - is that Clorox? You best look to see if it has Cloromax. Not for use in pools.
 

rnjw

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May 19, 2014
35
Pittsburg, CA
That is news to me. They started selling this Cloromax over a year ago. Looking at the label, I see no mention of use in pools. It has worked ok for me all this time but if I can't use it, it will be difficult to find chlorine without the other ingredients. An industrial supply store did not return my call for retail sale.
 

mknauss

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May 3, 2014
37,112
Laughlin, NV
Pool Size
6000
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Fiberglass
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Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Cloromax is a polymer additive. We emailed with Clorox when they started adding it and they said do not use in pools. But if you are fine with it, great. Polymer can plug primarily a cartridge filter and also end up as a scum line on the water line tile and in the skimmer.

Home Depot, Walmart, Lowes all carry liquid chlorine. 10%.
 

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