If you want a pre packaged raw salts mix for Cannabis in Australia, although not cheapest i'd look at Athena
Otherwise as mentioned something like campbells or yara kristalon range if you want pre packed part b's Although they fairly high N for flowering.
Or do what I did find someone using a pre packaged micro mix ask if they can send a small bit to you (there only sold in 5kg batches which would last most people 50 years growing at home). then make up the NPK S C and mg with potassium sulphate, cal nit and mono potassium phosphate and hydrobuddy.
I'm personally gonna be using cal chloride too to get that Ca higher than N