AquaClear has been making the world’s best-selling clip-on aquarium filter since 1978. Its success and longevity are a result of consistent design quality. AquaClear is synonymous with the clip-on aquarium power filter. In fact, we invented the first one ever with a hermetically-sealed pump in the late 1970s. AquaClear’s enduring success is based on a simple chamber basket design that allows you to customize filter media to suit your aquarium needs. The power behind AquaClear is that we empower the fish-hobbyist.