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    Any reason not to run with a CYA of 90?

    30,000 IG FC 13 PH 7.4 ALK 90 CYA 90 My pool is in full sun and always has a water temp in the high 80's. The water is crystal clear. My numbers are always stable and I only add bleach once a week (big bottle of clorox). Chlorine level is always 13-15. Is there any reason to lower my CYA?