I've been lurking here for over a year and this site has been immensely helpful. I ordered by TF-100 kit and feel in control of my pool. This season has been the easiest season so far for me. The other day I had 6 teenage kids in the pool and unfortunately didn't drop any shock in the pool that evening. I woke up to a cloudy pool - its blue, but cloudy. I cannot see the drains in the deep end of the pool.
The FC at the time was non-existent, So I dumped 3 gallons of liquid cholorine in the pool. I dumped another 2 gallons in the pool this afternoon. About 6hrs later, here are my numbers:
FC - 10
TC - 10
pH - 7.6
TA - 180
CH - 400
CYA - 20
So, I realize the FC is a little low for shock level (based against the CYA levels).
My questions are the following:
1. Should I be concerned about the TA and CH levels?
2. Is the cloudyness just because something is 'growing' in my water, hence I need to shock it?
3. My PH has been extremely stable the entire season.