I was browsing the Pet Warehouse site and under their list of CO2 equipment they list a glass CO2 diffuser from a manufacturer called Fish Vet, Inc. There is no picture or any details (except the price) at the site. Does anyone know what it is? TIA, Bob Visit my new Freshwater Aquarium site http://w3.nai.net/~luna/Fishpics/Fishpicstn.html