High capacity pre-filter for Merlin-Garden Pro with upgraded KDF85/Catalytic Carbon filter. 6,000 gallon filter life. Adds 2 extra pre-filter stages before Merlin-GP. 

Removes up to 99% of chlorine, 90% of sediment, rust, silt, etc. and volatile organic compounds and particulates down to 5 microns to pre-treat water before the Merlin GP. Extends pre-filter life by 3 times.