XB2040 - For use in 40 L or less aquariums. Max water flow 360 L/Hr. Efficient fitration design. Special design leading water to go through cartridge nearly completely. Adjustable water flow switch. No need to add water after restart. High quality plastic material. Designed and made in Taiwan

XB2060 -  For use in 60 L or less aquariums. Max water flow 400 L/Hr. Efficient fitration design. Special design leading water to go through cartridge nearly completely. Adjustable water flow switch. No need to add water after restart. High quality ABS with high durability. Design and made in Taiwan

XB2100 -  For use in 80 L or less aquariums.Max water flow 560 L/Hr. Efficient fitration design. Special design leading water to go through cartridge nearly completely. Adjustable water flow switch. No need to add water after restart. High quality plastic material. Design and made in Taiwan