Directions For Use:Submerge gravel vacuum cleaner inside aquarium.Place other end of hose into a bucket.Open up flow control valve.Start "squeezing" the auto siphon pump until a siphon is created.Remove fish waste and debris by lowering gravel vacuum on gravel.Adjust flow control valve as needed for different size aquariums.
JBJ Instant Siphon Gravel Cleaner
