Alk Dosing Solution Calculation

[04V10]

Hey everybody,

I am going to be using a new chemical for dosing alk and I just need some help with a calculation for a dosing solution. Here's the data:

The tanks current consumption of dKh per day is .23dKh
Tank volume minus live rock and live sand is ~18.75gal
The buffer I am using has a strength of 5g/150L = 1.4dKh (5g=1 teaspoon)

I would like to make a 30 day solution dosing 10mL per day. I would like to make a 300mL solution for the 30day supply.

If you could help me out with how much I need to mix into the 300mL that would be great. I think it is ~2.5 teaspoons, but I just wanna make sure as tonight was the last day supply of the Red Sea Buffer that I was currently using.

Thanks in advance.