Condition: 100% Brand New Item Type: Aquarium Refiner Material: Acrylic Color: As Pictures Shown Optional Size: L-24, M-17, S-13 L Suitable Aquarium: Approx. 120-150cm/47.24-59.06inch M Suitable Aquarium: Approx. 80-100cm/31.50-39.37inch S Suitable Aquarium: Approx. 40-60cm/15.75-23.62inch 1The air output is fine and the dissolution rate is high, more practical. 2The main body made of imported fine workmanship acrylic material, glittering and translucent, dazzling and eye-catching. 3Refiner using the excellent nano MBKT technology manufacturing, bring good refinement effect. 4With independent bubble counting function at the same time, perfect combination with refining. 5Red chip need less pressure, especially easy to outlet air, saving more materials.If there are large bubbles, it may be that the CO2 diffuser slice has not been fully immersed, and there will be no large bubbles after being placed in water for more than 2 hours. You can soak the CO2 diffuser slice for 2 hours before use.1 xAquariumRefiner1 xSuction Cup