alkalinity

Good morning all. Seems like I'm constantly fighting to keep my pH in the desired 7.4-7.6 range and alk 80-120 in my 15,000 gal, pebble tech pool. You guys already know this....adding muriatic reduces pH but it also reduces the alk. Adding baking soda raises the alk but also raises my pH...

Hello all! Fine tuning the chemicals for my swim spa, I have two quick questions. 1. I found this old TFP post from 2008: How do I use Chlorine in my Spa or Hot Tub? ..many other posts (and instructions on my chemicals) say to have hot tub TA around 150 ppm. Any thoughts on this? 50 ppm seems...

I was able to SLAM my troubled pool successfully earlier this year, thanks! Now I am curious about long term strategy for keeping my alkalinity in check. We have extremely high alkalinity city water (I tested at ph 7.4, alkalinity 300 ppm). Currently, I'm consistantly adding acid which has it...

We have an in-ground pool of around 5000 gallons and since we have owned the property, the water has been stubbornly acidic. A phenol red test is always yellow so I tried some litmus paper and it claims a pH of about 3. We do use the pool and it is not too bad but skin feels a little sore...

I’d appreciate some suggestions on addressing high alkalinity in my tab water. I tested my tab water (with suggested testing equipment) and the alkalinity level I got was 220! No wonder I did a partial refill and it ended up shooting up. Any suggestions on some type of hose filter I could use to...

Hi all, The pool math app tells me that total Alkalinity should be between 50 and 90. But it's unclear to me which "alkalinity" should be in that range: - the "raw" alkalinity measure I get with my test kit? OR - the adjusted alkalinity (ie: Measured alkalinity - 0.33 * CYA level)? Given that...

I just ordered a CORE-55 and am converting to SWG. After tons of reading, I have noticed many with complaints of SWG raising pH more quickly than desired. My problem is going to be that I already have to add 32oz of 31.45 Muriatic acid for every two inches of fill water to reduce the...

Hi TFPerss, I checked the water yesterday. I wanted to bounce these numbers off you all. FC 5 CC 0 pH 7.5 TA 110 CH 300 CYA 30 water temp 87 My pool is not salt water. Resurfaced some years back to Wet Edge Satin Matrix (it's aggregate). My CSI shows things are okay. I float one puck at a time...

We are new pool owners of a 6,000 gallon above ground pool and we have been plagued by algae problems since the beginning. We have already drained the pool twice because it seems to be the only way to rid ourselves of the algae. We are running the sand filter (1,500 gallon/hr) Sand Filter Pump)...

Hi all, 15k gallon non-salt water pool. My TA was low 4 weeks ago (30) so I added 16lbs of baking soda. The pH kept rising to 8+ super fast after that so I kept adding muriatic acid to bring it back down. Today I tested my TA again and it's only 47, so I added 4lbs baking soda. My pH is rising...

Hi all. I’m a new user to the pool math app and was wondering why the ideal alkalinity levels in the app are so low. Recommended range there is 50-90 and ideal range is 60-80. Most other online resources and pool store tests recommend an 80-120 range. Which range do you recommend following and why?