Thanks Elias. As a science teacher I have access to ordering it, but figured this must be a cheaper alternative. I was lucky enough to find this article while in the parking lot, so I picked up a 20kg bag....$13 and one cent, including taxes. That should do me a while.
http://www.advancedaquarist.com/issues/dec2003/chem.htm
CENTRAL ALBERTA REEFERS: Feel free to contact me to come and get some if you wish. I don't mind sharing if you're likewise inclined so we don't all have 20kg bags kicking around our houses. If you feel like donating a frag of shrooms or something in return, that'd be fine and lovely but not necessary. I'm willing to give up some for free.
