Since I have a SWG and don't need any chlorine......, jk, I like to get some of the administrators BP up with comments like that.
Lets start again, I have a SWG cell rated at 40k, my pool is 55k, and was built in the winter. I have used the TFP from the get go (glad I did, as soon as the month was over when the "had control" of the water, I used my handy dandy TF-100 and the chemistry levels were deplorable. One more tangent, I did recently purchase a PH meter because I never like the guess that color game, really like it so far, I continue to use the qualitative test as well, just to hone my skills, but it makes me feel better about knowing more accurately the ph, very similar from the FAS-DPD Chlorine test vs the sticks, or color chart.) I have brought the CYA up from 20 to 60. I am going to take it to 70 this week. I like to use the liquid CYA and wait a week before adding more ( I do use the Trouble free calc, however, I want to avoid too much CYA for all of the bad reasons that yall know).
Question #1. Those who have gone a few summers, what changes in CYA did you see from beginning to the end of the season. I know that CYA does not get used (how in the world have people used pucks for so long is crazy to me), seems like it will always increase the CYA to unacceptable levels in every single pool, due to chlorine consumption and the CYA just hanging out and adding up. This leads me to believe that there is a certain amount of CYA loss per season, due to splash out and rain dilution, though evaporation and autofill should not effect it. How much do yall typically have as a loss of CYA. If you start at 70 in a swg, and don't add any, what is the average drop rate ( I know there are variables, ie but on average).
Question #2. What length of time do yall have your filter running. My filter (sand with variable speed) runs enough already at 12 hours to keep 95 percent of the debris, I can see that the screws are Phillips head that hold the main drain cover in at 10 feet. With the SWG cell at 90%, it maintains around FC of 2, I augment with liquid chlorine. I have just recently increased it to 18 hours run time just so I can have more time with the SWG cell running. My question, on average, what is the typical run time for the filter ( I have read many articles on this, but again, not for filtration, but just for SWG production) If most people are running the filter at 12 or less, I could run my for about 8 (at least in the winter and still do fine on filtration). I am trying to decide if I want to go ahead and add a second SWG cell, the PB and I discussed that at the very beginning, but wanted to wait to see how well the one would work first. Pros and cons of up front cost of the SWG, vs long run cost of running the filter longer, and increasing the wear and tear on the filter pump.
Thank you for your all of your help, just getting ready for the first summer and want to see what the normal trends are so I can plan ahead.
Fyi, for new people don't buy anything from Leslies, I found CYA for nearly half the price on amazon, and I use chlorine from walmart and acid from Lowes.
Getting excited about swimming season, we have set May 1st (18 days and counting) as the date to turn the heater and heat/chill pump on and go for it. We have taking a few dips already with the water temp at 65, it was to say a little brisk.