Recent content by sqlb3rn

For dropwise tests, is it necessary to swirl the mixture after every single drop, or can I add multiple drops and then swirl? For example, if I know the CH is well over 100, can I add 10 drops and then start to swirl after each drop, or should I start swirling the mixture after every drop from...

I bought some ph minus from the pool store, and it's sodium bisulfate. Do you think I should use it, or buy muriatic acid from Lowe's instead? My concerns with dry acid are adding sulfates to the water. My concerns with muriatic acid is safe handling and storage, strong fumes can make me dizzy...

The CC Further reading answered my question, thanks! I read the Taylor test kit supplementary guidebook, and have been reading through the Pool School material, it's great information.

How is combined chlorine prevented from building up? The SLAM method says combine chlorine shouldn't be above 0.5ppm, so does the combine chlorine stay low if pool chemistry is balanced? I was under the impression that it constantly builds up as free chlorine is used and eventually you have to...