Prima Klima PK2603 Carbon Filter 800 m³/h

The Prima Klima PK2603 is an 800 m³/h carbon filter built for 160mm ducting and G-Tools GT 160 fans. It suits growers running medium to large grow cabinets who need dependable odour control without frequent maintenance.

Odour management is non-negotiable in any indoor grow. The PK2603 uses activated carbon to adsorb terpenes and other volatile organic compounds before air leaves the cabinet. At 800 m³/h it moves serious volume, keeping pace with a 160mm fan running at full speed. You get up to 8 months of effective filtration before the carbon becomes saturated.

The 160mm flange connection is a straightforward match for G-Tools GT 160 extraction fans sold here at Hydroponics UK. Pairing these two components eliminates the need for reduction collars or custom ducting runs. Mount the filter inside the cabinet at canopy height, connect it directly to the fan inlet, and route the exhaust duct to the exit point. A short, straight duct run gives you the best airflow figures.

A pre-filter sleeve is included in the box. Fit it over the outer mesh before you switch the system on. It catches dust, fibres, and particulates that would otherwise clog the carbon bed prematurely. Wash the sleeve every four to six weeks to maintain full airflow. Replacing just the sleeve costs very little and extends the carbon's working life towards that 8-month mark.

This filter sits in Prima Klima's Eco range, which targets growers who want proven German-engineered filtration without paying for top-tier commercial spec. If you are running a G-Tools Bonanza, Roommate, or similar 160mm-ducted cabinet, the PK2603 is a natural choice and slots in without modification.

Grower’s Note: Carbon filters work best when the air inside the growing space is kept at negative pressure relative to the room outside. Ensure all cabinet panels seal tightly and that passive intake vents are smaller in total area than the exhaust. This forces all outgoing air through the carbon bed and prevents unfiltered air escaping through gaps. If you notice odour breaking through before 8 months, check the pre-filter first - a blocked sleeve can reduce airflow enough to push air around the carbon rather than through it.

Priced at £155, with free UK delivery.