How long would two gallons of b-ionic last? - Shelf life?

[I'm considering buying the 2 gallon size of B-ionic, but I don't know how long the shelf life will be on it? I only use 20-25ml a day, so that would last me forever.

Anyone know how long it lasts? Does it last longer if it's refigerated?

TIA]
 
[You'll be fine. Always shake up the main container before your refill your daily dosing bottles.

BTW, if anyone wants to buy 10g of Bionic BiCarbonate from me, please take it off my hands. This is designed for HIGH PH tanks only. :( Since this isn't the for sale forum, just PM me.]
 
[I bought the 2 gallon size about 3 years ago and never opened them. Would it be save to use them now?]
 
[I would shake them up very well, and let them sit for 24 hours before using them. When I say shake, I mean for about 20 minutes. ;)]
 
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