Features:
-Built-in air pump
-Adjustable airflow rate
-Low power consumption
-More quiet and delicate: optimized outlet piping design, greater air output, more delicate foam, and lower noise
-Adjustable length of pipe
– use in different tank height
-Dual filter media containers: can hold a variety of filter media, with better water purification and activation effect.

Model: DD100A ( Suitable for Tank Size: 40cm or below )
-Adjustable pipe: 17cm to 25cmm max overall length
-Sponge dimension: 4.7cm dia x 8cm Height
-Bio media housing dimension: 4cm Height Model:

DD200A ( Suitable for Tank Size: 40cm to 60cm )
-Adjustable pipe: 17cm to 25cm max overall length
-Sponge dimension: 6cm dia x 10.5cm Height
-Bio media housing dimension: 4.8cm Height