6-Pack of Secondary XL Filters for the Cold Stoic 3.0

These XL (formerly called "Jumbo") filters can only be used with:

• The Cold Stoic 3.0
  
• Custom Built Tanks with the Jumbo Filter Housing

This is NOT compatible with the standard filter housing. If you are unsure which filter you need, most likely you will need the standard filter.  Please contact support if you have any further questions.