Instant Ocean Dosing

[jvision]

I'm just setting up my first SW tank, planning on displaying a pair of clowns w/ and anemone, and some corals.

I have Instant Ocean salt, but I don't have the container, so I was wondering how much to add.
The system will be a 37 gal w. a 10 gal sump. With sand and LR, it'll probably be around a 40-45 gal system.

Thanks!