Didn't appreciate how far this stuff goes and bought too much, (I only run a 34g tank...). Don't have alot of storage space, so I'll sell the excess rather then taking years to use it.
1 gallon Magnesium Sulfate. I paid 19 US before conversion and shipping, so $19 CDN.
BRS High Capacity GFO. 1.75lbs for 60 CDN.
Cheers