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This filter is the replacement for Hot Spring's most popular hot tubs that use a 30 sq
reinstall your pool filter per your manufacturer’s instructions
Easily replace your old 31114 filter
Because of its almost neutral pH level
EverFresh MPS Test Strips Filters This filter is the replacementUse these test strips to monitor your spa's MPS (oxidizer), pH and alkalinity levels when using the Watkins chemicals as a part of the Silver Ion water care system.
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