aquarium pharmaceuticals calcium test Anyone have the instructions for this test kit? Thanks
steelgluer Member Oct 9, 2007 #1 aquarium pharmaceuticals calcium test Anyone have the instructions for this test kit? Thanks
offsetfactor Member Oct 10, 2007 #5 I believe each drop is 20...20 drops is 400, so you are looking 22-23 drops for 450...
cpbirds407 Member Oct 10, 2007 #6 Each drop is 20ppm so 1drop = 20 2=40 3=60...... 20=400 21=420 22=440 23=460 23=460ppm and so on...