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Hello TA is 130, do I need to do anything? I had already added 3 lbs of Soda Ash when I saw the reply, sorry. But my PH is indeed 7.5 now so looking much better there. FC=3.0 and CC=0 today. My CYA has now started registering. I had dipped a test strip in the pool and noticed there was...

And CYA is still less than 30, likely near 0

Hello I did a 7 day SLAM and have let the chlorine fall. I did a full test today and have the following numbers: FC=5.5 CC=0 PH < 7.0 .. the tests lowest indicator is 7.0 and it was lighter than this. I tried the base demand test and it was 3 drops to bring it to a normal range...

Hello I passed the OCLT this morning after a full week SLAM with only 1 PPM of chlorine loss (12 to 11). I am now letting the chlorine go down to a normal value. Tonight, my FC=9 now and CC=0 after pool being in sun for much of the day. I also measured CYA and its still near 0. I will...

okay thanks my heater is long past its warranty, its past 10 years old and I am trying to get the most life I can out of it.

Hello MY CH is slightly low, and I am wondering if I need to raise it because I have a pool heater. I saw comments on this site that CH is not that important for vinyl liners, just make sure its not too high. But what is the affect on the pool equipment if its slightly low, particular...

After day 5 I measured this morning and had an FC=9 and a CC near 0. I did not measure until almost 10AM. I think I am fairly close. I could only do an official measurement this morning due to low R871 but I am supposed to get my replacement bottles today so I can resume official FAS-DPD...

Hello Day 4 results still have not passed the overnight test. Yesterday I kept the FC levels between 10 and 12 and it only dipped below in the morning and in the full heat of the day. I used 3 bottles of 12%, compared to 6 the prior day. (23 + 8 + 6 + 3 bottles of 12% so far). At 9PM...

Okay, I have two of the three criteria, crystal clear water and CC=0 (verified last night and today with FAS-DPD). I guess I will keep going today checking every hour again. Thanks Scott

3rd Day of SLAM - am I done or do I keep going? define "overnight" Hello Things are much better but it looks like I still did not pass the OCLT, here is what I got: Day 1- 23 gallons of 12% put in Day 2 - in the morning no chlorine level, but CC near 1, added 8 gallons throughout the day...

Second morning after start of SLAM Hello I am still losing chlorine, even though the CC was at 0.5 Day 2 of the SLAM yielded these numbers at these times: 2PM FC=0 Added 3 gallons 12.5% 3:45 FC=4 Added 2 gallons 4:30 FC=12 5:30 FC=11...

Hello Thanks, yes I definitely waited before measuring CYA. One bottle was put in Friday and the other on Saturday, so now that its Sunday. This happened to me last year when shocking the pool, I put in the CYA (2 bottles) before the pool was truly shocked properly and it was registering...

Hello I started the SLAM process at 4PM yesterday (after sun left pool area). I had to SLAM due to low FC and high CC (around 12). Here is what I got: Time: ------ 4:40 FC = 1.5 5:20 FC = 2 6:00 low FC (only used test strips until I got a reading, was worried...

Re: My first FAS-DPD efforts Thanks Jeff I am adding the CYA (instant conditioner) tonight and will slam the pool on Saturday. The water is clear, if one did not know about the water balance issues you would think it was swimmable. I have been skimming the top of the water daily. The...

Hello Here are the results from my water test. I found all of the tests fairly easy to run except for the FAS-DPD test itself which was very difficult for me to get repeatable results. I watched the Taylor kit video and made sure I matched it. Here are my results and my comments: PH: 7.2...

Thanks Casey The calculator told me 26700, since my deep end sides are sloping half way down, does that alter the calculation slightly?

Hello I am new to TFP and first want to know the number of gallons in my pool. Its 18 x 36 rectangle, in-ground, 3 foot shallow and 8 foot deep end, but the deep end sides are slanted. I have seen estimates between 23,000 and 25,000 gallons from pool stores, and was wondering if that is...