Planted Tank Obsessed
Join Date: Oct 2019
Location: Waltham, Massachusetts, USA
Maybe I missed it, but I'm somewhat surprised that no one explained that the API master kit comes with two ph reagents, a low and a high. The reason is that the low can only go up to 7.6 and the high down to 7.4. My experience questions the ease of reading at the extremes of the ranges. A lot of hobbyists have ph over or under 7.4 so both are included in the test kit. If you're safely in one range or the other there is no reason to run both ph tests.
The real fountain of youth is being a musician