cya

[Update: My technique was wrong - tftestkit 50ppm CYA sample was a big help. See my follow-up post below if interested in this subject; otherwise ignore this post.] I purchased a bottle of CYA 50ppm water sample from tftestkits and did the block dot tests several times as a sanity check...

Howdy folks, Brand new Aussie product here, what on earth has Bioguard been cooking up now: https://bioguard.com.au/products/eco-sunscreen-and-clarifier/ Any thoughts on what this actually is? Chat GPT advised its propiatary and I can't even find a Safety Data Sheet. I did however find the...

Hi all, My chlorine level seems to have drastically dropped within the last couple of days. I’d love some advice as to what might have happened. For the last 2 years, I’ve been using liquid chlorine and have been keeping my CYA level around 40/45. Generally, I’m at a FC 5 or 6 every day. Two...

Hey Everyone, Still on this learning journey as a first time pool owner. I've enabled the setting in the Pool Math app to Link from TroubleFreePool.com user profile to see the most recent test results. Question Free Chlorine week over week (we test on Thursdays) is inching up by 1 ppm...

Hi, still a newbie, but thanks to TFP...finally figuring out how to get my pool in good order. Started with CYA just above 90, so exchanged large amount of water and ended up with a CYA just under 40, got pH to 7.2 and started the SLAM. Seems I am nearing the end of the SLAM. I'm ready to add...

When doing the CYA test with R-0013, it requires 7 ml of sample water and reagent, each, for a total volume of 14 ml. The tube with the black dot seems to have a capacity of just over 10 ml. Does it make a difference if instead of preparing 14 ml for the test one would prepare 10 ml instead...

Im learning as I go this year. That being said, I followed the instructions from a pool store and my CYA reached 80. I drained some water and refilled based on the advice here. Now, as I read further, my chlorine tabs and shock are increasing the CYA again. I don’t want to throw $200 worth of...

We just put up and filled our pool over the last few days. If it matters, it’s 16’x48”, above ground. Before adding any chemical, we tested the water and CYA levels show to be 300 on a test strip. For what i’ve managed to find online, tap water shouldn't have CYA in it. Is it possible that...

I'm in the process of my SLAM, my CYA was around 70 when I started so was doing my SLAM based off of that. Fast forward to 4 days in and I go to measure CYA today and it is coming up as 0. I did a bench test with a gallon of water and measured out a miniscule amount of CYA to mix in at the...

Hello All - Did my intro post last week so I'll keep the intro brief-ish. Had a 14,700 pool with 7x7 spa built in 2017. Only recently did I take an interest in pool chemistry because I was questioning whether my pool guy was treating my salt water pool like a chlorine pool. He hadn't added...

Hi all! I bought a house with a pool in April. It had not been opened for the year, and we've been working on that for 3 weeks now. I've taken TFP as law and purchased the test kit and chemicals suggested. With the water green as can be, I'm trying to start a SLAM. My problem is that the CYA...

I am trying to figure out a couple of things. I have added 70 ounces of CYA over the past 2 weeks, and it only raised by 10ppm. Over that same period, my salt reading has gone up by 400ppm without adding any Salt. I have tested these numbers several times in the same sample to confirm. EDIT: I...

Hi, I am noticing what I thought was sand but worry is potentially tiny blobs of algae on the bottom of the pool over the last days and weeks. I would brush it or robot vacuum and it would seem to return in the same areas. No CC readings really ever, but I'm reading that is not necessarily...

Hello- I’m dealing with a blue but cloudy pool. I’m fairly sure we had some algae overwinter in the pool due to poor care last year (new baby). I plan to SLAM but my CYA is 0 right now. My question is do I need to get CYA up to 30 before SLAM or do I start SLAM to assess for an ammonia issue...

Had two questions, one practical and one I'm just curious on. 1. Will leftover CYA in a resealable pouch from last year still work this year? Work but less effective? Not work at all? 2. I know this would depend on conditions, but what's a ballpark half-life of CYA itself? Thanks for the info.

Hi! I've read a number of threads on CYA in TFP-- so helpful. This website is amazing. I think I am doing things right, but just want confirmation, as last year I messed up (I'm a newbie). I made the mistake of using (probably poor quality) test strips last year, added too much CYA and then...

Good evening, new to owning a pool and looking for advice. We drained and refilled the pool this spring to start fresh as this is new to us. Per TFP I’m going with all liquid chlorine but we needed to raise the CyA. I bought granular CYA and it says to add it slowly to the skimmer basket which I...

Hi, Been following TFP since getting my first pool in 2017. Never had an issue with chemistry until now. I have always used the "tube with the black dot" CYA test and it's always been between 30-40. This year I tried using strips to test for the first time and 2 different brands of strips are...

Good day all, New pool owner, going to take over my pool maintenance from the service that my builder provided for first two months. Service kept the FC around 2-3, added a gallon of muriatic acid once a week, never said if he did anything else. All of the pool school chem articles make sense...

Hello, First season with a pool that came with the house we just bought. I think I’m getting close to getting things right but wanted some recommendations with chlorine and CYA. I bought a taylor K1004 test kit before coming here and didn’t realize it didn’t test CYA. Bought strips for CYA and...

I am relatively new to the TFP methodology. Last summer we had a pool person who "took care" of everything and the pool generally stayed crystal clear. We later learned he was just adding chlorine and shock to keep things balanced with no regard for numbers. When we took it back over the pool...

I am following the 11/14/2008 Nitro sticky How do I use Chlorine in my Spa (or pool)? Caveat ::: Does CYA dissipate from a water sample over a few hours in an (almost) enclosed container at room temp? I had the ≈ 4 oz water sample taken a few hours before, in a clear 8 oz squirt condiment...

We recently got a hot tub and was given the @ease system to use. I was given instructions on shocking with 1oz dichlor and 2oz MPS weekly. Well the @ease system wasn’t keeping up with heavy usage. My tub was turning slightly green in color (still very clear) and my CC was through the roof. So I...

My CYA has been tracking high. It started at 145 a month ago and I am now down to 118 through dilution with fresh water. Pool Math is recommending target FC from 9-15 and I imagine that it is because my CYA is so high, however, the target has not dropped as my CYA has dropped. As of today, my...

Hey everyone, I'm looking for something digital that's accurate and can test as much as possible (mainly caring about free chlorine, total chlorine, ph, alkalinity, cyanuric acid, and calcium hardness). I have the hardest time with test strips and color matching. It's difficult knowing which...

Hi all, I’m new to SWG world and could use some help. Here are my numbers taken from Taylor Kit: FC: 4 Cc: 4.5 PH: 8 Alk: 110 CYA: 77 CH: 200 When I go to Leslie’s they are reading my TA as 62…So I read the post on TFP about SWG, CYA, and TA/PH relationship. The post says the following: “In...

Hello all! TFP has really saved me over the past few months. I recently bought a house with a pool and was testing religiously and was still having trouble keeping everything clear. I found this site, bought a FAS-DPD test kit, (already had a Taylor kit before) and performed my first SLAM...

Hello, There must certainly be a few (many ?) places here where this is discussed in depth. Could you please show me the way to the most relevant ones ? Thank you in advance. Nota : pool in France, pH and chlorine controlled via peristaltic pumps, pH and ORP probes, sulfuric acid (PVC liner)...

Is it possible to loose over 10ppm ( more closer to 20ppm) in one month? I’m in the South of Spain. My pools water temperature has been around 30C or slightly higher for the past 3 months. I got my Taylor test kit on 13th July and immediately tested the cya, because I’d been relying on test...

It's been since 2011 since I last perused here, and I see many great changes to this website. I use to buy test kits here and see they are no longer being sold here, and would appreciate any suggestions on where to look. I am looking to test my CYA (all of a sudden my pool turned greenish and I...