CO_² Glass Counter is designed for measuring the amount of CO2 supply employing the simple yet accurate bubble counting method. Even beginner can make an accurate CO2 supply to the aquarium, in a combination with Pollen Glass.

Pollen Glass Beetle has a large diffusion base, catering the CO_² needs of aquariums larger than 90cm, and sits conveniently on an inside corner of the aquarium. 30Ø is suitable 90cm tank, 40Ø for 90-120cm tank and 50Ø for over 120cm tank.

Pollen Glass Beetle has a large diffusion base, catering the CO_² needs of aquariums larger than 90cm, and sits conveniently on an inside corner of the aquarium. 30Ø is suitable 90cm tank, 40Ø for 90-120cm tank and 50Ø for over 120cm tank.

For use in middle to large size aquarium, Pollen Glass Large Series is available in 20mm and 30mm diameter diffusion area. Its U-shape is unobtrusive and eliminates clogging of the gas. 20mm is designed for 60cm tank with Riccia or stem plants, and 30mm for 90cm aquarium tank.