Our pool was re-plastered in early March. The company that did the re-plaster took care of the start up. This included the 2 weeks of daily brushing and balancing of chemicals. After returning pool care over to me, I have continued to brush at least once a week, more like once every 5 days. I monitor the pH daily daily and make adjustments to keep at 7.5. I have a few questions on water chemistry and what to expect over the next 6-12 months. I'll first show recent test results using the TF-100 kit:
pH=7.8 (before adding acid today)
TA = 70
I am adding 2 cups of muratic acid daily to keep at 7.5. I have checked several hours after adding to see if pH has dropped and it does. Next morning it will be 7.8 again. Is this a typical daily pH increase for newly plastered pools.
I have been trying to get TA up to around 100 ppm. I'll add the pool calculator estimate of baking soda. The TA will come up but then work back down over time. The highest I've had it is 90ppm. Does the daily addition of acid cause the TA to go back down? Am I working the two against each other? Before the the replaster job, the TA stayed around 60 ppm. I never tried to increase because my pH was steady.
Pump run time - during the break-in phase the pump ran 24/7. Now that I am couple months out, is it okay to let the pump switch off at night. I've read other places that the pump should run 24/7 the first year but I have not seen that same info here. Pool builder did not say specifically but because he preaches about the poor efficiency of sand filters, he will tell me to run 24/7 just for filtering purposes.
BBB method question - now that it is getting very warm and the chlorine demand will increase, what is best method for adding bleach. Boost the chlorine once in the morning to provide needed amount for day or break the dosage up and add 2-3 times. This is my first full summer with a pool so I'm not sure how much bleach will be needed daily. I didn't start the BBB method until late September of last year. So haven't had the full heat of summer experience.