I just ordered the test kit for my pool. I have my water tested at the pool store and have 100ppm stabilizer.
Being in the Austin, TX area and my pool getting direct sun all day long I want to keep my CYA levels high. I prefer getting them down to 70-80ppm range. To do this I will stop using the tri-chlor pucks and will monitor till it drops to where I want it.
However, how do I test for the 12ppm FC CL that I need with a test kit that tests betwee 1-5ppm? I read something about using distilled water to change the testing range, but was hoping for a little more direction.
Is there some info out there somewhere?