Backyard Aquaponics
A place to discuss aquaponics

Does anyone know a reputable dealer online that has the good quality blue food grade barrels for a decent price?
Or any ideas of the kind of business that might use them? ...and ill look locally

Soda distributors usually have them. I purchased my barrels from a barrel recycler. Found them on Craigslist.

Craigslist is great, but prices will vary widely (in my area at least) and sellers won't always know if they are food-grade. I got some delivered for $10 each, which was the lowest I'd found.

My local recycler has them for $6 each, which is a steal, but they aren't open weekends and are a bit of a drive for me. Also food-grade IBCs for $40, though they're almost never in stock. However, they have no web presence whatsoever (beyond a dot on google maps), so check your local listings.