You should pour the CYA reagent back and forth a few times to see if you are consistent. It should also be done in bright indirect light with the tube at your waist. Just round to the nearest 10ppm when you report it.
How does your water look? Any algae or need to SLAM? If not, assuming the CYA is in the 30-40ppm, you will want to raise that up to the 70-80ppm range we recommend for SWG pools.
How does your water look? Any algae or need to SLAM? If not, assuming the CYA is in the 30-40ppm, you will want to raise that up to the 70-80ppm range we recommend for SWG pools.