cya

  1. B

    Trouble balancing water

    Hello, I have a 17k gallon pool plaster cartridge filters and this year I seem to be having alot of issues with balancing the water: My current test results are : FC: 2.47 TC: 2.8 Ph:7.9 Alk: 77 CYA: 119 Calcium: 202 Iron/Copper : .01 Phosphates: 1691 Pool water is crystal clear with occasional...
  2. K

    Free Chlorine Issue : Water Chemistry

    Hello, I have a relatively new saltwater pool (11/1/2019) that I can't seem to get back into balance. As a result of allowing my CYA levels to drop to zero, my FC levels quickly followed (Florida sun). In an attempt to get my CYA/FC levels up rapidly, via stabilized chlorine tablets &...
  3. S

    Contemplating getting a Pentair Intellichlor

    I'm wanting to have a better understanding of how SWGs work. My understanding is that they kind of work like a puck system (minus the increase in CYA and having to buy pucks - you buy salt instead). Is that close to accurate? Here is my current setup (see images) - I have a full Pentair system...
  4. K

    CYA going high and high

    5 days back I thought to test water from pool supplies store, so I went with water sample and came to know that CYA is 125 out of my 28000 gal pool. So person suggested me to drain 1ft of water, so I drained and refill 1.5 feet and then went back for testing. This time FC was low and CYA came...
  5. C

    First TF-100 Test Results! Questions/advice...

    I just got my test kit and did the full battery (I think). Results: FC: 1.5 CC: .5 TA: 150 Ph: 8 CH: 1 CYA: 40 Pool: ~30k gallons, vinyl. I used pool math to calculate bleach addition, and addition of low n slo I still had. I have read the ABC’s of Pool Chemistry and most of the articles in...
  6. P

    Add CYA first or Vacuum/Chlorine?

    Hi Guys, I need to SLAM my pool as it is pretty dark and gross looking. PH - 7.4 TA - 80 CYA - Below 30 Now I know CYA needs to be at least at 30 before I SLAM but currently my jets will start to slow due to the algae in the pool. What I'm wondering is should I just start adding chlorine and...
  7. W

    CYA off the chart high

    Pool test results from this morning: Free Chlorine: 28 pH: 7.0 Total Alkalinity: 80 Calcium Hardness: 430 CYA: 200 Water Temp: 85° (Taylor K-2006 test kit) Pool specs: Orlando, Florida 10,000 gal in-ground Plaster Chlorine Variable Speed Pump with pressure gauge My pool calculator reports the...
  8. R

    Stinging noses, headaches, smell

    FC: 5.5 CC: 0 pH: 7.4 TA: 110 CH: 150 CYA: ~26 Water temp: 80 F 10K gal AG TF-100 kit Hi everyone and welcome back to pool season in the Northeast! Opened up about a week ago, passed the OCLT on 5/21 and then had a crazy heat wave the past 2 or 3 days so the kids have spent considerable...
  9. L

    Working on opening salt pool - need some advice

    Hi folks! Just recently filled a Saltwater pool and am working on getting it leveled out. Got a TF-100 kit. We filled the pool on 5/18, added 100lbs of salt on 5/19, then after the salt dissolved after two days we put our pump on it’s “BOOST” mode and let it do its thing. Initial test showed...
  10. L

    Getting started with a SWG

    Hi everyone! I just set up an Intex 15' diameter, 4' tall pool and filled it with water. We added 100lbs of salt as per the pump's instruction manual (Intex Krystal Clear 1500 GPH Sand Filter Pump & Saltwater System) and have gotten it to dissolve. I have a couple of questions: 1) Should I add...
  11. P

    shocking the pool

    Hi, I am a new pool owner. I just bought a house with a pool so this pool is well established. I have tested water and pH is 7.9, alkalinity 80 but CYA is 144 and high calcium. I use trichlor tablets (2-3/week, 9000 gal pool). I was told that I should use CYA, Ca2+ free shock chemistry, which...
  12. P

    CYA consumed immediately?

    Hey all. 21K pool, had CYA at 30 for a few weeks as I was SLAMing. Once finished, I added 5 lbs of dry stabilizer which said on the package that it was 99% or so CYA. Added it in a sock by a return jet and massaged the sock so it would dissolve quickly. Tested a couple days later expecting...
  13. L

    Calcium Hardness Question

    Just had my pool resurfaced. For the first two weeks, I relied on Leslie's and another local pool store for pool tests until I got my TF-100. Did my first test today. I've got a SWG (Autopilot) FC=17 CC=2 PH=7.5 CH=600 TA=80 CYA=30 The Leslie's results were very, very close to the TF-100...
  14. D

    CYA Help

    Newbie here to the Diclor-Bleach Method. Can you all make sure I have my head wrapped around this correctly. I believe I am ready to switch to bleach. I have trouble accurately reading the CYA test (TF-100) so I have calculated based on the amount of diclor I have added. So far, I have added...
  15. ady5

    CYA

    Is there any way to test CYA levels using dry cyanuric acid? Thanks, Ady
  16. ady5

    CYA Levels and Cal Hypo

    Hello, My CYA levels have crept up over 100. I think it is because I have been using sodium dichloro-s triazinetrione granular shock. I only have a skimmer, no main drain. I've replaced about 30% of the water, which is all I can do at a time through the skimmer. It came down a bit and has now...
  17. F

    Validation of my first test (K-2006)

    Hello, all. After years of paying a pool guy $100/mo my sister has asked me to take over (the maintenance, not the paying). I've replaced the booster pump and the majority of the parts in her Pentair CC200 and everything still works so I got that going for me, which is good. Bought a K-2006...
  18. L

    Where'd my CYA go?

    tl;dr: My CYA went from 50 6 months ago to under 20. How? 17000 gallon pool, 4.5' average depth. I noticed that my chlorine consumption has been creeping up. I tested my CYA in July and it was 50 (which made sense in terms of previous readings). I don't regularly test it because I only use...
  19. Earthman Bob

    Winterizing with High CYA

    I tested for CYA .... maybe about a month ago, and it was low, so I added the recommended amount. Just tested it again now, and the level is 90-100. (Don't know why that happened, but that's not the point of this thread.) I'm getting ready to winterize, and Poolmath says I need to add 11...
  20. bigdogmg

    2nd summer of new pool and CYA too high

    I completed my owner/build pool last summer and had little issue with the water chemistry (did not check CYA at pool start up nor during summer). Now this summer (hot summers in Arizona) I've been going thru a lot more 3" stabilized chlorine tablets than I did last summer and pool has had light...
  21. G

    High CYA Clear Water

    Ok...back again for another chastising...... I have always used the pucks and after lurking here and getting some good advice I changed everything. I got concerned about high CYA and changed from the pucks to liquid chorline, test with the dpd instead of strips, etc. But....when I tested my...
  22. P

    Can't get FC to drop in SWG pool

    Hello everyone, New to the forum, new to pool ownership, not new to pool maintenance but not a hardened veteran either. For a couple of years many years ago, I was a manager at a large public pool, so I understand fundamentals and definitely know how to properly test chemistry. We recently...
  23. J

    CYA Accumulation

    Hello! I am a new pool owner here in the hot AZ desert and have been doing my own maintenance with good results so far. We filled the 9000 gallon pool in early July and so far about 16 Tri-Chlor pucks and maybe 5-6 bags of the 13oz shock have been added. I took a sample to my local pool supply...
  24. C

    Issue with CYA levels

    Hello I have recently purchased the Taylor Technologies K-2006 test kit and ran some tests on my pool water. The results came back as follows: CYA: less than 30 ppm FC: 0.2 ppm PH: 7.8 TA: 60 ppm Calcium hardness: 70 ppm Having read through some of the threads on this forum I came to the...
  25. M

    Cyanuric acid heated up and dissolved almost immediately

    My pool went neglected for a few weeks as our first child was born last month (I added bleach/acid sporadically but not with any precision). Now I have a bit more time to get everything balanced. My pH was about 8.5, FC 0, and CYA was almost 0 which was a surprise since I had added about 4lbs...
  26. J

    CYA on a SWG Pool during SLAM

    Hello Everyone. Long time member but mostly a reader. I am very late into the opening of my pool this year. I have a SWG pool and I got my CYA up to 30. I am wondering about the need to have it in the 70's now since my SWG is shutoff until I am done with the SLAM process. Is it necessary to...
  27. FourReelFish

    Sweet spot in the CYA to Chlorine table?

    I am aware of how stabilizer works with your sanitizer, but I was wondering what you should actually keep it at. Higher CYA means higher Chlorine demand but less burning off, Lower CYA means lower Chlorine demand but more burnt off by the sun. We all know that. But in your opinion, what would...
  28. R

    Vinyl pool..above ground cya and chlorine

    I am getting differing info everywhere. I have an AG pool with vinyl liner. Cya is at 30 using call hypo as main sanitizer. Question is..the pool math calculator says to keep fc btw 2 and 6 at 30cya. All websites seem to recommend keeping fc btw 1 and 2.5 for vinyl liners to keep them in good...
  29. A

    CYA confusion... (Pool store vs. Taylor K-2006)

    Alright, I installed my new (to me) 24'x42" above ground pool last summer. Had no idea what we were doing so we pushed the 'easy' button and went to Leslie's. Spent several hundred bucks on chemicals last summer and thought there had to be a better way. Talking to a co-worker, I became convinced...
  30. P

    Salt, Cyanuric Acid and Pool Proof

    I have a vinyl lined, 12,000 gal salt pool. I run the filter and chlorine generator 24/7. I added Pool Proof (borate harmonizer) which claims it will cut down your sanitizer usage, make your ph and alk levels play nice, etc. my question is, With the borate harmonizer doing what it is suppose...