Step 1: 3mL of tank water, add drops of A until colour change.
Step 2: 3mL of new water, 5 drops of B, small scoop of purple chrystals, add drops of D until colour change. (I find 99% of the time the magic # is 5 so half the time I skip step 2)
Step 3: subtract # of drops in step 2 from # in step 1 and multiply by 50.
eg. (32 drops of A) - (5 drops of D) = 27 drops x 50 = 1350
Unless the kit has changed very recently?
|