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Enhanced shock is not MPSDealers can be wrongYou will get better understanding and information on sites like these. You NEED a sanitizer in your water treatement.Sanitizers are Bromine, Chlorine or (Silver ION (Nature 2) AND MPS combined)The Nature 2 low chlorine recipe clearly states you need either MPS or chlorine in addition to the stick. Word from the folks here is that if you are using chlorine with the stick, it may be overkill because chlorine alone will work.
I'm not sure what you mean. Enchanced shook is mps.