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Thank you for your quick and detailed response, Rancho!! I had some time to do water tests for different water sources at my house, and below are my results: Tap Water Outdoor (My current water source to add water to pool, and I do have a water softener at home) PH 8 TA 100 CH 75 Tap Water...

Thank you for the reply! I noticed there are some white scale on the tiles around the water line, and it looks like the flakes are coming from the scale. Attached is the picture of the tiles. I don’t have the flakes from the cleaner anymore, but when I tried to put some muriatic acid on the...

I have a in-ground 16,000-gallon plaster pool which is about 20 years old and I own it for the last 3.5 years. My pool cleaner starts collecting the white pieces of substances for the last few times I cleaned. I mainly use liquid chlorine and muriatic acid to balance the pool chemistry. I...

I took the advice from the forum to drain 80% of my pool water last July because of my high CYA (>100). Since then, I have been using the Taylor’s K-2006C test kit, liquid Chlorine and Muriatic Acid to balance the water chemistry and have stopped using Chlorine tablets. In this summer, I found...

Hi All, I went back to Lesile's today and wanted to buy their 31% muriatic acid. I also asked them to do a water test for me hoping I can compare their results with my own test using my Taylor kits after replacing 75% of pool water with tap water about 2 weeks ago. Lesile's result (Their...

I did a water test for FC and PH again today. FC: 5ppm PH: 8 1. I haven’t added any LC since I added 1.25 gal LC yesterday and got 10.6 ppm FC, but it drops to 5ppm in a day. Is this normal? If not, how many ppm does it normally drop in a day? 2. My PH remains high at 8, and I plan to drop...

After adding the 1.25 gal of LC, my FC result is now 10.6ppm. I really don't get it. Thanks! Mike

My pool is 16,000 gallons, and below is a picture of the LC I was using. On 4/25, I was using the HDX LC that I bought from Home Depot last year, and I was able to raise my FC to 9ppm back then. Since I went out of HDX LC, I bought the KEMTEK LC from Lowe's a couple weeks ago. I reported my...

My family member helped me to add 0.75 gallon of LC with the pump on this afternoon. I just tested my FC, and it’s 5.2. 1. Is it because my PH is slightly high 7.8-8, so it’s affecting how LC is reacting in my pool? Should I add muriatic acid to slightly bring down my PH before adding my more...

Now my FC test result is 4.4ppm. This is after adding a total of 2 gallons of liquid chlorine and 70-80% water change. 1. Just to confirm, the Julian date on the liquid chlorine box is in fact the manufacture date not the expiration date, correct? 2. Since my CYA is around 55-60, my next step...

Yes. I bought these liquid chlorine two weeks ago. The dates on the box is Julian dates 20076. That’s roughly March 16, 2020, and that should be manufacture date not the expiration date, correct? If that’s the case, what else did go wrong that my FC remains zero? Thanks again! Mike

Hi All, I just did another FC test this morning, and my FC result is still zero. This FC test result is after 70-80% water change and 1.25 Gallons of liquid chlorine added to the pool with the pump running yesterday. Is this normal? I’m going to add another 0.75 gallon of liquid chlorine in...

Thank you both mknauss and mguzzy for your quick responses!! Yes, we always run the pump when we add the liquid chlorine, and we run at least an extra hour after adding just in case. I will raise my FC to 7-9 range tomorrow since my CYA is at the 60 range. At this point, since I don’t need to...

Thanks again, ajw22! It took me 2.5 days to drain 70-80% of my pool water because my draining system isn't as fast as my 1/4 HP pumps and another day to add the tap water. I tried to follow your instruction to add 5 ppm of liquid chlorine, so I use the Pool Math app to calculate how much...

Thanks for the reply, ajw22!! 1. The 30% water replacement was suggested by the Pool Math app based on my CH result. The suggestion based on my CYA result didn't specify the percentage of the water replacement, so I thought 30% was enough. By the way, was the 80% replacement based on my CYA...

Hi Neighbor mguzzy, lol, Thanks for the reply! In this case, I will plan on drain and refill. I went to the Brentwood city website to get an idea how much 5000G water will cost. To my surprise, it will cost less than $7 per until (one unit = 1000G). I always thought the water cost more...

Thanks again for your reply, Allen!! 1. I did a CH test on my tap water, it's actually 250 ppm. I think it's because the water from the water softener also goes to the backyard. In this case, is it safe to use the tap water to refill the pool? 2. What is the disadvantage of using chlorine...

Thank you for the reply! I will run the test and provide the result. Just have a couple follow up questions. 1. How many gallon of liquid chlorine should I add to 4 ppm? The Pool Math app suggests that I add 3 gallons to reach my target. Should I add 1 gallon per day until I reach my target...

Don't get me wrong. I'm so happy that I found this website. I believe I spent more than $1000 at Lesile's last year which is my first year owning an in-ground 16,000-gallon plaster pool. I recently found this website, did some researches and printed some notes. I also bought my Taylor...