Bulk Activated Carbon
High grade Bulk Activated Carbon is ideal for use in filters. Activated Carbon removes organics and heavy metals. Great for do-it-yourself filters or use as replacement for a commercial filter you may already have. Priced per pound. Carbon is sold in bulk and is not packaged to go directly into the pond. For easy placement use the Laguna Media Bag which will fit about 2lbs per bag. A cheap alternative to bags is to use tube socks or heavy duty panty hose.
It is recommended to use:
5lbs of Activated Carbon per 1000 gallons.
Replace as needed. Ponds high in organics and heavy metals will need to have the carbon replaced more often. A typical pond will need carbon replaced every 3-6 months.