Korallenzucht- Activated Carbon 1L

"Put It In A Mesh Bag In A Passively Flown Filter Bypass Or In A Nylon Stocking On Top Of The Zeovit® In The Zeovit® Filter. Rinse The Carbon Briefly With Hot Tap Water Before Use.Use 1 L Korallenzucht Activated Carbon For 250 Gallons/1000L Water. Completely Replace Every 30 Days."