2 part dosing question?

[spawn]

I'm perplexed I'm dosing Two little fishies c-balance on 55 NWV gal setup, right now I up to 24ML of CA per day but only 7ML of the alk. I'm just wondering if this is normal? I thought it was supposed to be a balanced supplement?
Also I do weekly water changes of 5-10 gal with reef crystals, after water changes Mg & Ca always seem to drop, has anyone else experience this? I know, I will test the next fresh mix.
CA 420-450
kh 8.5
Mg 1350-1400
SAl 1.026