Best bang for the buck activated carbon ?

[BlueTang<3]

I use the bulk reef supply rox carbon run it in a two little fishes reactor with some nylon at the top to hold it in it is tiny stuff. But it by the 5 gallon pail and it works out to be pretty cheap. I bought half a pail last time about a year ago still got a lot left. I run 1 small cup changed out every 2 weeks or when i fell.

http://www.bulkreefsupply.com/store/...um-carbon.html