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Hi all, My inground liner has once again come loose in several places which I have managed to work back in place, along with a few blisters. I have ordered liner lock with the intention of fixing it once and for all by installing it all the way around but I saw one blurb somewhere that you can...

I'm needing to increase my CYA from <<20 to 40, maybe 60 since I get full sun all day. I've read that you should allow a week between adjustments to give the CYA time to dissolve. I'm adding the acid by putting the granular acid in a sock and placing one in the skimmer and the other in front...

Hi everybody. My pool water has been crystal clear until today. Here's the situation. I bought a robot cleaner last year which didn't work when I got it and now it's quit again. I'll post that in another forum. None the less, the pool has been sitting with several small piles of dirt in the...

Starting with a suggestion from a friend I have used black plastic with double water tubes as a winter pool cover for somewhere around 12-14 years. I started out using store bought pool covers but by year 2 they were shot. A 24'X100' roll gets me through 2 seasons and leaves enough for various...

Just in case you want to confirm you're getting 6% bleach or want to test the stuff you've had setting around, can a given amount of bleach be diluted with non-chlorinated water and then tested for its chlorine content? Is it even feasible since we're talking diluting 60,000 ppm to something...

I have about 35 CYA so my shock level is 14. I started shocking yesterday and it dropped 2 overnight and during the day I loose anywhere from 2 to about 4 per hour (its a hot sunny day here in east tenn). I read when shocking that we should check the FC every hour or so and bring it up to the...

For the first time in years my CYA is headed for the low end...30-35. I had a post last year re: CYA levels for sunny pools where a reply was that I could go 60-80 for an all day sunny pool. The recommended level for vinyl using bleach is 30-50. Would it be worth it to increase CYA to say 70...

I'm in the process of shocking and I added 16 ppm FC, 3-182 oz jugs and 3-96 oz jugs of 6%. My PH was ~7.4 before adding the bleach and now it went to ~8.2 about an hour of so after adding the bleach. I did see another topic "Expected pH to rise after shocking...but it didn't" which kind of...

Hi everybody, hope you had a good winter. So it's a new season with a new problem. I'm still using the Arneson Pool Vac that came when the pool was built in 1993. I've replaced a couple set of shoes and one set of wings but it keeps on moving. However, over the last few seasons I've noticed...

I was advised in another post to not worry about the TA being 140 unless it's causing a problem. The PH keeps creeping up to 7.6-7.7 (>7.5, <7.8) every 2-3 days and I lower it with acid to ~7.4. Last test for CH was 130. FC is being maintained in "Calculator" range for CYA of 80 with CC 0...

Has anyone plotted FC during the course of the day to see what kind of trend line it is from sun up to sunset? Also how about cloudy days versus bright sun? And one more, at the end of the day is there a "coast down" drop in FC at sunset? The reason is I've been doing my testing about 1 hr...

The middle school Sunday School class is coming to swim. Is there a way to "get ahead" of a forthcoming step increase in swimmer load to ensure FC does dip below the mininal value? Is there a calculation or rule of thumb to anticipate what the chlorine usage will be per person and I presume it...

I'm sure this is out there somewhere but I've been unable to find a general conclusion. My question is what are the affects of water temperature on pool chemistry? Say 70F vs 80F vs 90F.

The calculations which are provided by most sites is a simplified 1/2 the volume of "box". There are a few that try to include a fudge factor for the hopper designs by multiplying by .85. Anyway back some 15 or so years ago when I had the pool built I had sat down and calculated a volume and...

First, as I have eluded to in other posts, I have been a lost ball in high weeds trying to take care of our pool until I read up on the BBB method and other knowledgable facts of pools. I have finally reduce CYA from somewhere >180 to around 70-80, got PH to move up from stuck on 6.8 to a...

The topic "CYA Discussion" seemed to be open ended. I have converted to the BBB manual method and used 3-3qt jugs of 6% bleach per day when my CYA was at ~90 following a 50% refill (Yes I was in bad shape. Couldn't get PH up or the TA down, and didn't know my chlorine at 3 ppm was useless.)...

I finally got me a test kit with titrants/drops. On the TA test I get 180 where as two different test strips indicate ~120. It appears the kit's TA drops are smaller than most others. Also I read somewhere in another forum that I should wait 20-30 seconds between drops on the CH test. Does...

Hi all, I have really been enlightened by the various discussions and first hand information available on this site, especially the Chlorine/CYA Chart by Chemgeek. That was an eye opener. I've been doing pretty well at finding information on most of my issues which I have been fighting a...