cya

TFP Friends - I think the key question I have here is whether my black dot has disappeared (see picture below)... I have other sub-questions I would love to hear feedback on. If that dot has disappeared, then I'd say my CYA is around 40, which I believe is too low and might explain how much...

First, I want to say that we are first time pool owners of a 10k gallon, vinyl, filter cartridge using, chlorine eating, in ground pool, which came with our home purchase last fall. I've added what I know in the about me portion. If I didn't do something correctly just let me know. Based upon...

I have followed instruction from TFP in past two month and the result is amazing. Water is sparking clean with no need for shock for more than a month. I had to drain water once to lower CYA to around 60, but the problem was a left-over from previous use of dichlor and trichlor. I am...

I have an outdoor above ground pool. I have been using stabilized chlorine 3" tablets for several years now. This year the CYA level got too high. I had to drain 1/2 my pool. I switched to unstabilized chlorine tabs. My CYA levels are now at a proper level. I have been warned about the...

New to pools. Depending on the store, when I take my water in to get it tested I have gotten readings of 60 to 100 for CYA. I am using bleach, borax, baking soda, muratic acid and some calcium hardener as chemicals. Are their tests just wrong or why would it go up if I'm not using any tri/di...

It's first time I post a question here on TFP. Really love how informative the forum is. I need help on finding a bulk water delivery service in North Dallas area around Plano (75025) to refill my pool with about 13000 ga water. My backyard faucet can only supply 300 gallon per hour and it...

I had to drain a bunch of my pool because of CYA of ~110 or so. Since that time I have been judicious with my use of trichlor and have instead been using bleach to sanitize. For my 14500 gallon pool I’ve been adding close to a gallon of bleach per day and that seems like a lot. Could there be...

I seem to have an unusual situation with my CYA. At the beginning of this season I used tabs to get my CYA to 50, them switched to liquid chlorine. Few weeks later I checked my CYA and it had dropped to 30, added several more tabs, back to 40, few weeks later dropped again to about 30. Since...

Starting this year, I took over taking care of the pool myself from a pool service. I’ve done a lot of reading and research, and testing! Unfortunately, in the beginning, I was using Clorox shock and pucks, and test strips. Since then, I’ve run into this group, and have switched to purer...

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...

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 &...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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

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...

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...

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...

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...

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...

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...