Hey, I was just wondering if anybody could let me know the most affordable way to re-gravel my 220. I'm changing it up and going with black and I am definitely going to need at least 200 pounds. Is there a way to buy bulk? The best way I can figure is to buy the 25 pound bags at Petsmart for 15 bucks which would put me out roughly 125 bucks. Is there a place that sells 50 pound bags, or a way to buy bulk for cheaper?