Cleaning your aquarium gravel is always such a chore breaking out the vac and slogging buckets, but if you own a Fluval FX4 and FX6 canister filter then the Fluval FX Gravel Vac is a must have. It simply attaches to your canister filter and gives you a simple and painless way to keep your gravel clean.
Since the canister filter powers the suction, there are no buckets to haul, priming ball (or the old fashioned mouth method) to get the water going. It uses a recirculation design to pull water from the tank, through a disposable filtration bag traps and then through the water filter, and back into the aquarium through the outlet nozzle. The addition of the inline filter, helps keep the excess detritus and waste out of the filter and keeps your system cleaner for longer.
Sadly this will only work if you have the Fluval FX4 High Performance Canister Filter or FX6 High Performance Canister Filter. It is a great design that should be a part of all canister filter designs. The Fluval FX Gravel Vac retails for around $35 USD.