sen5241b
Reef enthusiast
I just used a brand new API KH/GH test kit. The KH was 6 drops which according to the chart is 107.4 ppm. The GH test is determined by how many drops causes the solution color to change to green from orange. I added sixty drops to 5 ml of water and it did not change to green. Yes, I held the tube in bright light. I can't believe the GH is 1074.0. Could the kit be faulty?
This is the kit:
http://www.marinedepot.com/ps_ViewItem~idProduct~AP3219.html
This is the kit:
http://www.marinedepot.com/ps_ViewItem~idProduct~AP3219.html