high cya

I need help! (please). I am about 5 months in as a new owner of a jacuzzi swim spa. All of a sudden my Total and free Chlorine were off the chart high I tested with a different test strip and Total was off the chart high but FC normal.. I started reading here about CYA. Only the new test...

Hello! I am working my way through pool school and I believe I need to SLAM my pool but has a few questions first. I will attach a picture of todays CYA reading. Can I get away with a partial drain and refill or should I drain the whole thing? Some background….. We came home from vacation...

Hey everyone. I am new to the TFP forums. I posted about a week ago with my initial problem, which I mainly saw as low pH and high Alkalinity (High Alkalinity, Low pH. Aeration.). Other users replied, telling me that I probably had bigger problems, and that the first step was to get a...

Hi there everyone! I'm a new home/pool owner and new to the thread - have been lurking around and not sure if I'm seeing anything specific to my problem so here goes... (I apologize, this is extremely long) ----Backstory---- We moved into our home a little over 4 weeks ago and the pool has been...

My CYA is at 140 and FC is 1.7. I was advised to drain and refill. Also advised to turn OFF my chlorine tower and only use shock or liquid chlorine every 3-4 days until CYA is down, then maintain with liquid chlorine/bleach. Does this sound right? Thanks!!

Hi all, first time posting and newish to pool ownership. I have a 28000 gallon AG vinyl pool with sand filter, 1.5hp pump. My pool water temp is about 60. It’s time to get my chemicals going to stop the algae bloom I had last year. I leave pool uncovered all winter and run the pump at night...

Hey all, found this site as a result of googling the issues I've had a with a new (to me) pool. I have absolutely no idea what I'm doing regarding pool stuff, but I recently read through pool school and am trying to get started on the TFP method. Grateful for any help you guys can give me...

Our CYA is 134 ppm. I know we need to drain some water. One pool tech said drain 2/3 and add fresh water. Another tech said drain completely and do light acid wash. I decided to start my own research and found this thread. So — partially or completely drain? And recommendations for submersible...

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...

Have an AG pool, trouble-free for over a year, but started having issues about a month ago when the pool turned green. We've been using tablets with an occasional shock. When we shocked it this time, it felt like the problem got worse. I read through the forums and other online places, and I...

Hello Community! First, I would like to thank you for sharing your knowledge and wisdom. I appreciate having these forums as a resource and have done extensive research and reading while on my quest to conquer a recurring issue I'm having. Thank you in advance for your helpful comments and...

Hi everyone! I've been lurking on this site for several weeks - such an awesome community. The information here is beyond invaluable! Bought a (new to us) house last year (August 2018) and had to do very little to maintain the pool (occasional vacuum) - or so I thought. The previous...