I have brand new unopened bottles of Seachem Fusion 1 and Fusion 2. These are 2 part dosing for salt water reef aquariums. Part 1 is Calcium/Magnesium and Part 2 is Alkalinty. I bought to use but decided not to do full reef for now. Only bought a month ago. Details of the items here:
https://www.aquariumdirect.ca/en/wat...n-2-500ml.html
Please note the ones I have are 1000ml bottles, not 500ml as in the link above. $30 for both of them. Will not split, you need both to work together in a system. Pick up in Burnaby.