Bacto-Surge Sponge Filter Small

Advanced Air-Driven Sponge Filtration

Bacto-Surge® Biological Action Filters are air-driven sponge filters designed to provide superior mechanical and biological filtration for your aquarium. Please note, an air pump is not included. These filters feature a highly porous sponge that offers an extensive surface area and thousands of microscopic pores, fostering the growth of beneficial aerobic bacteria.

Ideal for Freshwater and Marine Applications

Bacto-Surge® Filters are perfect for both freshwater and marine aquariums. The highly porous sponge maximizes bacterial action, increasing the surface area for maximum bacteria colonization. The soft sponge material is easily cleaned and made of durable polyether foam for a longer lifespan.

Efficient Design and Easy Maintenance

The uplift tube and built-in air diffuser combination provide maximum lift and resist clogging, ensuring continuous filtration. Regular maintenance is simple, requiring only rinsing with aquarium water to preserve beneficial bacteria.

Key Features:

• Superior Filtration: Provides excellent mechanical and biological filtration.
• Highly Porous Sponge: Maximizes bacterial action with an extensive surface area.
• Freshwater and Marine Use: Suitable for various aquarium types.
• Durable Material: Made of long-lasting polyether foam.
• Efficient Design: Uplift tube and air diffuser combination ensures maximum lift and minimal clogging.
• Easy Maintenance: Soft sponge material is easily cleaned without harming beneficial bacteria.

Usage Tips:

• Initial Soaking: Before installation, soak the sponge block in aquarium water for at least five (5) minutes. 
• Cleaning: Always rinse the sponge block with water taken from your aquarium. Avoid using tap or hot faucet water.
• Re-Installation: Submerge the sponge block in aquarium water and squeeze gently to remove trapped air, ensuring proper operation.
• Peak Performance: The filter requires a minimum of 30 days to reach peak performance. Monitor ammonia, nitrite, and nitrate levels during this period.

Small

Capacity: Up to 10 gallons

Foam size: 1.77” H x 2.17” D

Medium

Capacity: Up to 40 gallons

Foam Size: 2” H x 4.75” D

Large

Capacity: Up to 75 gallons

Foam Size: 4” H x 4.5” D

• Free Shipping is valid for orders with a subtotal exceeding $199 and all orders will be shipped via UPS. Items purchased for delivery after 3pm will ship the following day. Items purchased for delivery after 3pm on Friday will ship Monday.
• Koi Fish only ship Monday- Wednesday. For orders placed after 3pm on Wednesday, the order will be shipped the following Monday.
• For Motor Freight (LTL) Shipments, oversized or heavy items unsuitable for traditional parcel delivery will be dispatched through a motor freight carrier, as indicated on the product page. Once the carrier receives your order, they will reach out to arrange a delivery time. An individual aged 18 or older must be present to sign for the delivery.
• You may return or exchange an unused or unopened item for a refund (excluding shipping and handling charges) within 30 days of purchase. Following 30 days, the item may be returned in exchange for a store credit. Used chemicals and fish food are not returnable. In addition, all sales on Japanese Koi are final and non-refundable. Should you have any questions or concerns when your fish arrive, please call 908-420-9908.