2 Part Newbie

[randallino]

Hello Im hoping someone could advise me on this, I've just start 2 part dosing and I'm a little nervous, Alk is dropping, its gone from 9.5 to 8 dkh in 2 days. I'm using a standard 2 part A, B from J&L 25ml (2.5ml per 10G) per day. Is it normal for Alk to drop then stabilize after a couple of days or should I manually bring the Alk up to 9dkh with Sodium Carbonate?
FYI
I've been manualing dosing for a couple years using Sodium Carbonate and Reef Advantage for Ca for a 100G total volume.