Hi Wayne, I live west in BC and have never found a supplier for Prime Agra. Instead I use hydroton pebbles which can be found at any Hydroponics store. Found some recently at RONA hardware store. Don't know if you have RONA back east. Goodluck
Same here, never seen prime-agra for sale. You might want to consider using Dyna-rok or hydrotons as a substitute. As Lecent said, hydrotons can be found at hydroponic stores or Lee Valley. If you go to Dyna-rok's website, you'll find a list of Canadian dealers.