Recent content by pflood4150

Here in the Phoenix area I am no longer finding the higher strength acid and the 14% is priced at nearly $16 gall., compared to the $18-$19 I had been paying for the 34%. Are they hoping people don't read the labels? Is this the same in other parts and when or if will the higher strength...

Can peromonosulphate drastically reduce ph? I ask this as my spa ph dropped off the scale and chloring readings were at zero despite have ing been added daily.

You will see from my earlier post that I had the same problem in spite of having used MPS in the past. The only difference this time was that spa had a silver cartridge installed. I since removed that and did not use spa for a couple of weeks but maintained Chlorine levels and PH. Used spa for...

New 1.5# that I never used when I sold my hot tub. Put into pool rather than just throwing away in hope that it might help reduce chlorine demand which has increased due to temps over 110.

yes, today

I understand that after monopersulfate has been added, that the regular Taylor test kit will not give accurate CC readings without using a special test reagent. How long should I wait before using the regular Taylor drop test? In other words, would the MPS be permanently affecting tests?

Need to replace Pentair pool light which has 5.75" dia face plate but the closest size I find online is 6" so I am concerned that the retaining screw and bottom lug will line up with existing fitting as I think replacing the can would be a real pain which would necessitate drilling or cutting...

FC was at 3, Did not measure CYA, but it would have been low as very little dichlor had been added as liquid CL was used initially. PH was 7.6 and Alkalinity 60

That does not answer my question regarding MPS. Also, what makes you think that the sanitation is inadequate? Before spa was last drained I had let it sit overnight with spa flush chemical and when I refilled it I put in enough liquid chlorine so as to raise FC over 12 ppm then let it sit...

I had been using our hot tub for two weeks after filling it and balancing the ph, alkalinity and dichlor, calcium hardness etc to correct levels. I then added 1.5 oz of MPS and waited 2 days before entering spa. Within an hour after exit I had bumps and redness on my back which itched. After a...

Pentair pool light flips gfci instantly in spite of changing breakers.No moisture inside fitting. If I wire it directly and bypass the gfci it will stay lit. Main breaker is rated 25 A as is also the gfci.What couldbe the problem?

To clear up a few misunderstandings, the SWG I had been using was a Zodiac model C170. If it needed cleaning only once a week I would not have minded, but I had to do it daily as the plates became bridged with white calcium deposits. Also the cell s only lasted for one season. Since using liquid...

Just adding more salt will NOT affect the chlorine or CYA level. If I do not use tablets I will have to use liquid Chlorine, the only other alternative is to add a swg but I have been there and done that in the 50 years I have operated a pool here in AZ and would not want to go back to that as...

Salt will not make any difference to cya readings. Anyway I already have some salt added as it seems to make the water feel softer, but maybe that's psychological? The only way to lower cya is by draining and replacing, that is why I am concerned about adding more tabs.

I had been using liquid chlorine but as my local HD was out of it I started using trichlor tabs which I had bought for when I go away. My CYA was 45 but went to 70 after only 7 tabs had been dissolved. I still have over 50 unused tabs and would like to use them for the convenience but do not...