While the Pollen Glass Series is designed for popular 60cm aquarium tank, the Pollen Glass Beetle Series caters to the CO2 needs of aquariums larger than 90cm. In order to meet large CO2 requirements of aquatic plants, a large diffusion base allows effective dispersion of CO2 in the large size tank. Designed after the African stag-beetle for is unique shape the Pollen Glass Beetle diffuser sits conveniently on an inside corner of the aquarium. For extra-large aquariums, it is advisable to use multiple Pollen Glass Beetle units for CO2 dispersion.
Pollen Glass Beetle has a wider diffusion filter. Unique design Beetle sits conveniently on an inside corner of an aquarium tank. For a large size tank, Beetle can be placed on multiple numbers of corners. 30Ø is suitable for 90cm size tank, 40Ø for 90-120cm tank, and 50Ø for 120-180cm tank.