Thanks for the response Dan. I know I can purchase it from canreef vendors outside of Calgary, but it's the only item I need, so was hoping to buy it locally.

I am vodka dosing so prefer add another bacteria source (prevent mono cultures). I guess it's to follow SunnyX advice as he has lots of success with vodka.

I'm not particular to this brand. If nobody has it then I'll just pick up some ZeoBac.