Yes, add CYA.

Do you use cal-hypo? Or is your fill water really hard? Just trying to figure out why your calcium hardness is so high.

Your TA is way too high. It should be more like 80-120. That, combined with high calcium hardness and high pH is not good. Read the following threads to help you learn how to lower your TA.

http://pool9.net/ma/
http://pool9.net/alk-step

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