UP D622S S-Undergravel filter

Description

The UP D622S S-Undergravel filter provides reliable filtration for your aquarium.

Key Features

• Designed to maintain clean and healthy aquarium water
• Suitable for freshwater and/or marine aquarium setups
• Efficient mechanical, biological, and chemical filtration

UP D622S S-Undergravel Filter

An undergravel filter is one of the oldest and most reliable filtration methods, and the UP D622S brings that simplicity to small freshwater or marine setups. A perforated plate sits beneath your substrate and water is drawn down through the gravel, turning the whole bed into a large biological filter colonised by beneficial bacteria. With no fragile media to clog and few moving parts, it’s a quiet, low-fuss option that suits beginners and back-up filtration alike.

It works best with coarse gravel rather than fine sand or aquasoil, which can pack down and block flow, so plan your substrate around it. In our 27-29C climate, the constant pull through the bed helps oxygenate the substrate and keep the bacterial colony active. Vacuum the gravel during water changes so detritus doesn’t accumulate underneath and reduce flow over time, and pair it with an air pump or powerhead to drive the uplift.

See more in our filtration and equipment range, then read our undergravel filter guide and beneficial bacteria guide.