1. Biochemical Filtration: built-in new V-1 biochemical filter material, it is strong bacteria cultivation and easy to hang film. 2. Physical Filtration: Filtration sponge is added at the bottom to intercept large particles of dirt. 3. Dark Green Body: beneficial to the multiplication of nitrifying bacteria. 4. Safe: strong suction cup to ensure stability. 5. Bubble Stone: high-efficiency oxygen supply and it is delicate and quiet. Item Type:Fish Tank Filter Model: LH-600 or LH-300 size: 79x224mm or 67x189mm Material:plastic colour:Green and black Package Contents: 1 x filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.