How long Component C (NaCl free salt) lasts you?

[thejacgues]

Hey all,

I wonder - how long does Component C (or sny other sodium chloride free salt) lasts you?

I know it depends on the aquarium size and demand, but I am trying to calculate my future aquarium expenses and I wonder if 1kg Component C would last me months in a larger, SPS mainly tank.

 

[ShepherdReefer]

For me, with anything such as this, I keep a log and try to determine how long something is used to calculate the expenses.