My pool is 27 ft round agp. Its about 42 inches deep right now. Yes I understand its going to take alot of bleach. I am just trying to get the first reading. I have added 7 gallons of 10% percent bleach in two hours and still no reading.

The calculator called for around 2.5 gallons the water has turned to a greenish orange.

So how long after I add the bleach before I take a reading and if I still have 0 ppm should I just continue to add no matter how much it take to get to 10-15ppm.

Thanks
Chris