“My first order of a SENSE 2 Cassette 3 Pack was delivered very quickly and had an easy install for the first cassette used. This review is only for 3 stars though due to the odd make-up of the 3 Pack. The 3 Pack contains two C2 Cassettes which measure pH and FC daily, each lasting 60 days. The 3 Pack contained one C5 Cassette which measures pH and FC daily, plus CYA, Hardness, and total Alkalinity, lasting 30 days. I would much rather have preferred to receive three C5 Cassettes, but there is no way to obtain any C5 Cassette without also receiving the much less useful C2 Cassettes. The whole point of the SENSE S2 system is the ability to get more pool information and limiting the availability of the C5 Cassettes makes the whole system much less useful.”
