Quote Originally Posted by newpoo
Instructions say add drops untill water turns blue, then multiply by 50 to get reading....
What type of kit are you using and how fresh are the re-agents? If they have not been stored out of direct sunlight or in a cool place, they may be suspect. Also, most drops based test for CH I've seen you multiply drops by 10 but yours may very well be different. You may even want another test from another source just to be sure.

Dave