Fluval Flex 2.0 Poly-Carb Filter Cartridges (3-Pack) aquaone It will not lower pH

It will not lower pH

All types of fish including koi normally kept in a pond environment

5 m Connection for hoses ø (inner/outer) 12 / 16 mm Filter volume l 1

Glass thickness: 15mm

Filter socks 4" (x1)

Fluval Flex 2.0 Poly-Carb Filter Cartridges (3-Pack) aquaone It will not lower pHFluval Flex 2. 0 Poly Carb Filter Cartridges (3 Pack) Enhance the filtration efficiency of your Fluval Flex 2. 0 aquarium with this 3 pack of Fluval PolyCarb Filter Cartridges. Engineered for dual action filtration, each cartridge combines activated carbon with mechanical filtering to eliminate odors, toxins, and impurities, delivering clean and crystal clear tank water. Compatible with Fluval Flex 2. 0 tanks, these cartridges are easy to