High All, pretty new member here with some problems. I've had my pool now for two seasons and the water has always been clear . I thought I was doing things right till I came here, I was using test strips. I just got the TF-100 test kit and found some bad things. I tested yesterday and again today and here are my results.
PH WAY BELOW 6.8, FLUID IS YELLOW
TA 0 FLUID STAYS RED NEVER TURNS GREEN
PH WAY BELOW 6.8 FLUID IS YELLOW
TA 0 STAYS RED NEVER TURNS GREEN
CYA 140 50/50 POOL/TAP WATER
these are my results. I know I'll most likely have to swap out at least half of my water which isn't too much of a problem. What i really need is guidance on the rest of the things. OH I forgot to mention that right now the pool is crystal clear and has been. Your help is greatly appreciated. Here are a couple of pics of the pools current state.