I finally made it through the conversion. My levels held overnight at 15. What I need to know now is if it is ok to go ahead and close without doing anything else. I am going out of the country for 10 days later this week and would really like to get the pool closed before I leave. We will be converting next spring to a SWG system. Here is what my levels are as of 8:30 p.m. FC - 5.5, CC - .5, TA-190, PH-7.8, CH-190. I have not done anything with the CYA since I was concentrating on the FC level only. Also if it is ok to go ahead and close, what chemicals do I need to add to protect thru the winter.
p.s. the pool temp is around 67 right now. Our nights are finally getting a little cooler, it's been an unusally hot fall.
Thanks for any advice.