Anyway, back a zillion years ago when adding nitrogen and phosphorus to your tanks was experimental and cutting edge, I used to get chemicals from this place. There was no where else except a place in Canada. I didn't look, but maybe they still sell bulk chemicals.
There was a time when we actually debated wether we should use monopotssium or dipotassium phosphate. ugh
aquariumfertilizers sells the same stuff that greg used to.
I might be interested in a group order, but in all actuality the stuff is so cheap I can't really see saving any amount of money to make it worth the hassle.
LOL, as a group order, split up to club members. Hell that would last me a life time.
I ordered a pound of everything about 1.5-2 years ago, I just ordered more. So 50lbs would seriously last me about a lifetime~pending no new tanks of course!