OTO only tests TC. It will not give you any kind of accurate reading for your FC, actually some of the test strips might do a better job at this than trying to get a FC reading with OTO (and I do NOT recommend test strips!)
OTO only tests TC. It will not give you any kind of accurate reading for your FC, actually some of the test strips might do a better job at this than trying to get a FC reading with OTO (and I do NOT recommend test strips!)
Retired pool store and commercial pool maintenance guy.
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