Breakpoint chlorination
- Thread starter Lori5548
- Start date
PH may be the issue... I did see a thing on facebook the last week that said too much Pee in the pool makes peoples eyes burn. I laughed, I am not sure that is true.. but PH should be 7.5 or 7.6. Use Muractic acid to lower it... I need to go buy more myself as mine is getting up to 7.8 again
O. right. CC. This is edited.
Usually, it is CC that causes burning eyes and nasal/throat irritation. Urine causes CCs to elevate in a pool.
Add the 4 gal, brush and test in 10-15 minutes. If you added all that at once it may have made the test invalid. The FAS/DPD test is only good to 50 ppm FC.
Add the 4 gal, brush and test in 10-15 minutes. If you added all that at once it may have made the test invalid. The FAS/DPD test is only good to 50 ppm FC.
Almost out of 0871. Order online won't be here till July 5! No stores around here carry it. Guess I'll have to rely on my bioguard DPD. I've added 20 gallons of liquid chlorine since last night! Is that crazy. My ph and TA need adjusting. Should I do that now?
How are you doing the FAS-DPD chlorine test? What size water sample and what multiplier are you using?
We recommend using 10ml of water so that each drop is 0.5ppm, which is plenty of precision and will save your reagent.
We recommend using 10ml of water so that each drop is 0.5ppm, which is plenty of precision and will save your reagent.
I was using the 10ml and did multiple by .2 so I was wrong. My Free is now 15 yea! And Combined is 1
I had a feeling that something like that was happening.
The drops are only 0.2 if you use 25ml of water.
The drops are only 0.2 if you use 25ml of water.
Jblizzle, are you multiplying by .2 or 2 when you calculate your free chlorine?
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Sent from my SM-N920T using Tapatalk
I did not write 2 .... I wrote 0.2
But that is only if you use 25ml of water, which is not needed.Use 10ml of water and multiply by 0.5 (which as we all hopefully realize is dividing by 2
)I believe my ph is 7.0. I had to add 7 drops of the base demand to sample to get it to 7.3. I have PH increaser from pool store but have no idea what it's made of? My TA is 100. Should I be adjusting these levels now?
TA is fine.
pH test reads artifically high when FC > 10ppm .... so your pH must be very low.
What does the label on your pH increaser say? I am guessing it is sodium carbonate (soda ash) ... which will tend to raise the TA more than borax would.
pH test reads artifically high when FC > 10ppm .... so your pH must be very low.
What does the label on your pH increaser say? I am guessing it is sodium carbonate (soda ash) ... which will tend to raise the TA more than borax would.
Assume it is 7, target 7.5, add that amount, wait, retest, readjust, ect.
But remember the pH test may not be very reliable with your FC level.
But remember the pH test may not be very reliable with your FC level.
what TA do you have set?
5.5 pounds of soda ash will add 25ppm of TA
or for equivalent pH rise
11 pounds of borax will add 14ppm of TA
5.5 pounds of soda ash will add 25ppm of TA
or for equivalent pH rise
11 pounds of borax will add 14ppm of TA