cya

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...

Hey all! Been on a bit of a journey with our pool (not the homeowner, roommate) and am seeking some targeted advice. For background, pool pump was out of commission for at least 2 months during the early part of the year and we had a bunch of storms, way too many pucks in floater that whole time...

How do you get your granular CYA into a sock? I've tried various methods, including a big funnel or stretching the top of the sock around a container. The funnel is slow, but either way, I always end up spilling a little. There must be a better way. Do you weigh your CYA before or after it's in...

Hello all, I am a new member as of today. I live 20 miles south of Houston, Texas. I’ve recently retired after 40+ years of work. :) I’m adjusting to retirement and immersing myself in trying to get my 23 year old 16,000 gl. pool in top shape. I admit that the level of attention the pool has...

Hello, A question regarding the correction factor to be applied at Total Alkalinity measurement in order to get Carbonate Alkalinity : does this correction factor applies whatever the measurement type for TA ? Said otherwise, do we get (approximately) the same results for TA whether we use a...

Hey all - I was getting a hang of the pool stuff but I think I need help… the past week chlorine FC levels have been dropping fast. 9:30am on 6/13, zero FC chlorine 10:30am on 6/13, added 3 gallons of liquid chorine at 10% bleach. Sand filter backwashed Noon on 6/15, zero FC chlorine, 0.5...

Can anyone tell me the difference? The natural chemistry is an extra $16 per bottle, but I see it has the equivalent of 30% CYA as opposed to 24.92%. Is the 5.08% worth the cost? I am aware that granular stabilizer is cheaper, and someday I might switch but for now I’m new to ownership, and...

Hey all, just bought a new house with a large pool. It was going okay until today when I noticed it was cloudy and the sand filter pressure was high. Uh oh! I open up the chlorinator which was empty and backwashed the filter+cleaned basket. I used my TF-Pro test kit and found out I have ZERO...

Hi all! I’m pretty anal regarding the pool (10000 gallons) and test daily, I’ve maintained a pretty perfect balance since opening but after a few heavy rains, heavy recent use (kids splashing) and an accidental overfill (forgot I left the faucet in when topping up!) the CYA diluted from 70ppm...

It's crazy that over 99% of the pool professionals on YouTube all promote adding the floating chlorine tabs. I'm new to all this and learning a ton on this site! So I have also been a victim of using tabs for a year. I have a feeling my CYA is high (I need to buy the test kit recommended here)...

Man, this new pool is beautiful with crystal clear water! Installed early February, pool company cleaned it all out after concrete deck poured, etc. They had 3 chlorine tabs in a bobber which is long gone, put the proper amount of salt in about a month ago and fired up the SWG. All looks great...

My question is, is a CYA of 90 too high to perform an effective SLAM for mustard algae? According to the tables in TFP, the FC for SLAM is 35 and it is 51 for the Mustard Algae SLAM. Is it even possible to obtain a FC level that high without bringing in truck loads of liquid chlorine...

I have a Taylor K-2006 test kit that I got October 2022. When I tested my CYA according to their instruction I was getting a 35 (yesterday) but I just went to test at Leslie's today and the computer says my CYA is 59. Is there a common mistake I might be making when I do my own testing? Which...

I am writing this as a record of my steps in dealing with a situation I'm sure many of my neighbors in Texas are dealing with. In central Texas, the pecan trees are occasionally infested with aphids in late summer. The aphids will suck sap from the underside of the leaves. The sap is under so...

We just had our SWG start up last week for my 10,000 gallon pool. The pool builder company came and added salt. I just did my first salt test (Taylor TF-100 salt kit) and it’s showing 4400ppm. Too high I know, but is it dangerously high? Will this go down over time? Here are my readings: Ph 7.6...

Hi all. I have been a paid subscriber to the Pool Math app for a few years now. I've noticed it seems to underestimate the effect of adding dry stabilizer. For all other products such as 10.5% sodium hypochlorite, and 31.45% HCl, the calculations seem pretty accurate, but whenever I add dry...

I’m delighted with my SWG for many reasons. Among them the idea that I can maintain reasonably low chlorine levels while keeping CYA a bit higher. Many thanks to all the contributors on the topic of CYA & Chlorine relationship – including Ben Powell. Richard Falk (chem geek) and other forum...

I live in Las Vegas, NV and have a 20,000 gal pool and I use Liquid Chlorine . Earlier this year I bought some granular cya and raised it to just 30 but I think overtime is has gone just a bit below. I have seen on some posts its not bad to have a bit higher cya for some areas. I want to raise...