hth Blue Sparkle Simmer Tabs?

Welcome to the forum!

Cannot read the ingredients but must be Calcium Hypochlorite.

Reports here say they leave behind a goo in the skimmer. It is also not recommended to add chemicals directly through the skimmer. When the pump is not running your skimmer will have a super-chlorinated bolus of water in it that when the pump turns on travels through your equipment.

Take care.
 
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