Pool store rep came by to check something about my liner today. He saw my bottles of bleach so it struck up a conversation needless to say. He told me that bleach would ruin my liner and something about the bleach eating up internal parts of my filter... I argued with him about the relationship btwn cya and FC and he said 98-99% Trichlor tablets were just the same and would not raise my cya levels. Interesting convo. One of those agree to disagree moments.