I need to get a mag test kit, oneof my other test kits came in today. Tested GH and KH, KH was 8, and KH well thats a weird one; is it for fresh water or something? I tested it and 50 drops later it never went even remotely green. Did this test twice, this would put GH already past 250% of the chart. Was thinking GH is more for fresh though. As stated working on mag. kit.