[IceMan]

i understand the need for calcium... but if you'll listen to the advice you won't need to dose it, my calc. is at 440 which is great and i do have kent calc. but never use it as i don't need to. thats the point, use the right salt and save the money of seperately dosing i have NEVER dosed calc. and it stays between 420 and 440! the regular water changes replenish your calc.