The Hygger Aquarium Double Sponge Filter (HG-908-D-S)
is a multi-functional, air-driven internal filter designed for small to medium aquariums ranging from 10 to 40 gallons. This "S" (Small) model combines mechanical, biological, and chemical filtration into a space-saving design that mounts directly to your tank glass.
Key Features
3-in-1 Filtration System: Unlike standard sponge filters, the HG-908 series integrates:
Double Fine Sponges (60 PPI): High-density ribbed sponges provide a massive surface area for mechanical debris trapping and beneficial bacteria colonization.
Bio-Media Containers: Two detachable canisters pre-loaded with ceramic pearls to enhance biological waste breakdown.
Oxygenation: Uses an external air pump (sold separately) to drive water flow and increase dissolved oxygen levels via a steady stream of fine bubbles.
Adjustable & Rotatable Design:
Telescopic Outlet: The water/air outlet pipe is height-adjustable (6.1" to 9.25"), allowing you to position it above or below the waterline.
360° Rotation: The filter arms can be rotated to customize the direction of the sponges and water flow within your tank.
Versatile Media Support: The media containers are easily detachable, allowing you to swap out the ceramic pearls for other chemical media like activated carbon or ammonia absorbers.
Safe for Delicate Inhabitants: The gentle, air-driven flow makes it an ideal choice for shrimp, bettas, and fry, as there is no powerful intake to trap small or weak swimmers.
Specifications
Attribute | Detail |
Model | HG-908-D-S (Double Sponge, Small) |
Recommended Tank Size | 10–40 Gallons |
Filter Type | Air-Driven (Requires Air Pump & Airline) |
Minimum Air Pump Size | 2.5W–4W |
Sponge Density | 60 PPI |
Dimensions (Small) | ~6" Width x 9"–13" Height |
Aquarium Biochemical Sponge Filter Dual Small
Shipping Policy
To ensure the safety of our livestock and the most efficient delivery of your supplies, please follow these guidelines:
Separate Orders Required
Live fish and dry goods (equipment, food, etc.) must be purchased separately. Because livestock and dry goods require different packaging and shipping methods, they cannot be bundled together.
Order Cancellations
Any order containing both live fish and dry goods will be automatically canceled and refunded. You will then need to place two distinct orders to proceed.
Shipping Methods
Live Fish: Shipped via UPS Next Day Air, UPS Next Day Air Early, UPS Next Day Air Saver, USPS Priority Mail Express to minimize transit time.
Dry Goods: Shipped via standard ground services.
Thank you for helping us prioritize the health of your new fish! 🐟

