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3 C5 cassettes give you 3 months (32 days per cassette) of measurementsFC, pH, TA, CH and CYA. Ideal for those who need daily readings of all 5 water chemistry values.
3 C2 cassettes give you 6 months (64 days per cassette) of measurementsFC and pH. Measures the two chemical parameters that can change daily.
1 C5 and 2 C2 cassettes give you 5 months of measurements4 months FC and pH with the C2 cassette and 1 month FC, PH, TA, CH and CYA with the C5 cassette.
