Hello everyone! I have a new gunite pool (finished in October 2011) and am having trouble keeping the PH in the desired range, it keeps rising.
I am using a SWG for chlorination, my pool is 14,000 gallons and I am using one gallon of muratic acid every two days on average. I use the TF-100 test kit and got readings this evening about 6:30 pm. I live in the Houston area, the pool is in full sun all day. I run my pump from 7:30 am to 6:00 pm. Pentair Intelliflow pump at 1700 rpm with a 60 sq ft DE filter, I am able to turn the pool over twice daily at the current pump time. The SWG is at 80% and the water is crystal clear!
The readings iI got are;
PH 7.8 (added acid yesterday)
Salt ranges from 3,600 - 5,000 (according to my circupool SWG )
I am not sure if the CH test is accurate, I tested a friends CH for him and got over 500 then he got a reading from the pool store and they got 300. I feel confident in my other tests.
I appreciate any suggestions, acid is $6 a gallon and is the most expensive maintenance cost for me by far.
I have added baking soda several times according to the pool calculator without much success in getting the TA up to the desired rang for a salt pool.