Fluval AquaClear AC20 is a powerful clip-on filter for aquariums from approx. 16 up to 76 litres content. The AC Series takes power filtration to the next level. Built on a best-selling platform with a 40-year reputation for exceptional quality, reliability, and convenience, this series has become a standout choice that aquarium enthusiasts know and trust. Along with its proven multi-stage cleaning, CycleGuard beneficial bacteria support, and patented refiltration system, the latest clip-on generation sets a new standard for cleaning performance, media efficiency, quiet operation, and durability with several notable upgrades. Experience the unmatched cleaning power of Fluval AC Series!Fluval AquaClear AC20 -Clip-on Filter-+ 4-stage filtration (2 x mechanical, chemical, biological) for superior water clarity and quality+ CycleGuard preserves the biological balance of your aquarium through independent media replacement, which avoids disrupting the nitrogen cycle and is essential for main