VIV produce a wide range of glass accessories for the aquarium, made from high quality, laboratory grade glass, with gives maximum strength, durability and visual clarity. The hand crafted glassware is designed to achieve the perfect blend of art and function that are highly transparent and almost invisible in the water. Ideal for giving a professional look to any planted aquarium. The CO2 Glass Mini is a glass CO2 diffuser ideal for Nano tanks. The hanger style diffuser does not disturb the view and is designed for frame-less aquarium tanks made from 5mm glass or less.