<a href=showthread.php?s=&postid=14677296#post14677296 target=_blank>Originally posted</a> by bina770
well over 500 ,plus 3drops =(.03 mil) with the red sea tester so, 1mil plus 3 dops. and the instructions say if you use more than 1 mil and the color has not reached the color chart add, and its 3 dops more