The Hydroclean works by automatically creating a siphon, which removes water from the aquarium. The power of this siphon is enough to lift dirt out of the substrate, without removing the substrate itself. How to Use
To start the siphon, simply hang the siphon pipe into a bucket, and plunge the Hydorclean up and down until a flow of water starts. Then, dig the Hydroclean into the gravel and lift it up again, to pull dirt from it. When replacing any water that has been removed from the aquarium, remember to use AquaSafe to make it safe. Product Sizes
GC30 Junior - suitable for tanks up to 60 litres.
GC40 Standard - suitable for tanks up to 200 litres.
GC50 Deluxe - suitable for tanks up to 400 litres.