I had a new liner put in and refilled my pool. I have added 8 lbs of CYA, 4 lbs at a time, and I STILL don't get a reading from my test kit. I put the first 4 lbs in 2 weeks ago, and the last 4 lbs in last week. I have added it through the skimmer both times. When I fill the tube up to the 20PPM line, it is cloudy, but I can still easily see the black dot at the bottom.
Per the bleach calc, it says I needed to add 6 lbs & 11 oz to get to 40 PPM.
My pool is an 18 x 36 IG.
I'm thinking about adding another 4 lb jug today, but I don't want it to suddenly shoot up to 60.