You didn't understand the question. Basically, he is asking if you tested your RO/DI water with API test kit which is for saltwater not fresh. There's 2 different kits for API, one for freshwater and one for saltwater. So he is saying it may not read accurate because of that.
You didn't understand the question. Basically, he is asking if you tested your RO/DI water with API test kit which is for saltwater not fresh. There's 2 different kits for API, one for freshwater and one for saltwater. So he is saying it may not read accurate because of that.
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