GravelVac Multi-Substrate Cleaner M/L aquarium substrate cleaner by Fluval

The Fluval GravelVac Multi-Substrate Cleaner M/L is a siphon-style aquarium gravel cleaner designed for medium to large freshwater tanks. It allows removal of debris, uneaten food and detritus from gravel and mixed substrates while performing partial water changes. The tool maintains water clarity and helps reduce buildup of organic waste in the substrate without disturbing most of the gravel bed.

Advantages

The GravelVac M/L combines a wide-diameter intake with a one-way flow design to provide efficient suction of waste while limiting accidental gravel removal. Its extended tube and ergonomic handle enable comfortable use in deeper or larger aquaria. The transparent hose and removable head make it easy to monitor suction progress and to clean the device after use.

Suitable for

• Routine substrate cleaning in medium to large freshwater aquariums
• Partial water changes while siphoning debris from gravel or mixed substrates
• Spot cleaning under decorations or around plants where detritus accumulates
• Preparation of tanks before water testing or maintenance procedures

Key specifications

• Type: Siphon-style gravel and substrate cleaner suitable for gravel and mixed substrates
• Size: Medium/Large — designed for medium to large aquaria and deeper tanks
• Operation: Manual siphon action with wide intake for debris removal
• Materials: Rigid cleaning tube with flexible transparent hose for visual monitoring
• Design features: Ergonomic handle and removable head for easy cleaning and storage

How to use

Position the GravelVac head on the substrate surface and create a siphon according to the included instructions or by standard manual priming. Move the head slowly across the gravel or mixed substrate, allowing suction to remove waste while leaving heavier gravel in place. Continue siphoning while collecting waste into a bucket for partial water change; stop periodically to check water level and avoid excessive removal. After use, flush the hose and head with clean water and allow to dry before storing.

Usage recommendations

Use the Fluval GravelVac Multi-Substrate Cleaner M/L during regular maintenance intervals, such as weekly or biweekly partial water changes, depending on stocking levels and feeding. Avoid aggressive stirring of the substrate around sensitive plant roots or burrowing species; inspect for trapped fish or invertebrates before starting. Rinse the unit thoroughly after use to prevent buildup and prolong service life.