6 Way strips do NOT give a good CYA reading. The color in the very center MAY be correct if you're super-careful, but the color of most of the pad usually isn't.
6 Way strips do NOT give a good CYA reading. The color in the very center MAY be correct if you're super-careful, but the color of most of the pad usually isn't.
Carl
Ok.test strip (6 way) foes seem yo consistently show cya of 40-60, while the kit shows about 100. Have hit it w bleach and had cl up to 6 and ph at 7.2. How aften do I need to add bleach generally to keep from porpoising?
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