cya

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...

I am ready to get off the Leslie merry-go-round and move to the TFP philosophy. Walmart has pool chlorine for $5 a gallon. I plan to buy them out. I am fighting CYA problems. I drained half the water last week and that got CYA down to 100. I tested this morning and it is considerably higher than...

After having a small 7,000-gallon fiberglass in-ground pool for a year and being sold a bill of (expensive) goods by Leslie's when I first opened the pool, I am still left with SUCH frustration over ONE thing: cyanuric acid! I've had to partially drain/refill my pool three times already due to...

I'm new to pool maintenance, and we recently set up our 16x32 foot pool with a SWG. I've heard of some people that were able to forego using CYA with an SWG if they kept a pool covered on a regular basis. I've tried this method - I do run the SWG a bit more than would be necessary if adding CYA...

Purchased house with my first ever pool. SWG 30,000 gallons. CYA reading at 7ppm from one store, 5 at another, and 0 on a test strip. Poolmath says to add 18lbs, TFP says to do it through a sock at the returns. Do I just add another (3) socks full everyday for a week to get it up assuming each...

Hey ya’ll. Newbie here who has done a massive amount of research on the forums trying to get it all right. I’ve run into a few pool builder challenges that threw my chems out of whack just when I almost had them perfect! First off, I live in hot, dry Arizona and have a 10,000 gallon salt water...

I’ve seen it recommended to keep FC under 2.5 to maximize the life of a solar cover. Is that as true when CYA is 50? I’ve seen on TFP that with a CYA level of 50 I should not go below a FC of 3.75ppm (7.5% of cya). And I’ve seen on TFP that for swimming in a pool with cya of 50 that it is ok...

We have a new pool that is not yet "officially" done as the installers need to come back and add salt and program the control panel. We have been told that it is still swimmable while the plaster finishes its curing process so In the meantime we have been maintaining Chlorine manually. That has...

Hi there! We just patched up a leak and need to add a little CYA. (1 ounce) How long do we need to wait to swim after adding it to our skimmer?

We just opened our ag pool up and it was sparkling clean! From what I can tell, our numbers seem to be alright but the CYA is low. What are some recommendations for raising it to about 50? Our pool is in direct sunlight so the chlorine takes a beating. Should we put the solar cover on it until...

How are pool service guys keeping the CYA down while using Trichlor tablets on non-SWG pools only visiting 1 time a week?

I bought this house with a pool a year ago (Tucson, AZ) and I'm completely over my head in maintaining it. I bought a Taylor Test Kit (had seen it recommended on here) and noticed my CYA is way high. Last time I checked, it was over 100. Should I do a partial drain to get it back to where it...

Does a 200 ppm CYA level invite Black Algae? Seems like I can't keep a high enough chlorine level with this high of a CYA. Black Algae is mostly on the walls with some now spreading down the deep-end walls and a just little on the bottom. To find the 200 ppm CYA value, I used the Pentair Rainbow...

Hi all. I am building a pool and so I am starting to research how to maintain it myself. What I have read about pool chemistry all makes sense to me except for the following question I have... I understand that CYA is a chlorine stabilizer that you need for an outdoor pool. I also understand...