SOBO Biological Sponge Filters

SOBO Biological Sponge Filters

SOBO Biological Sponge Filters are air-driven aquarium sponge filters that purify the water and add oxygen while giving beneficial bacteria a place to live. They suit hobbyists who want quiet, low-wattage mechanical and biological filtration, whether as a main filter in a breeding tank or as a secondary filter alongside another system.

Key Benefits

• Airlift system that purifies aquarium water and enriches it with oxygen at the same time.
• Super biochemical sponge that operates silently, helping keep the aquarium calm and tranquil.
• Specially developed foam that gives beneficial bacteria an ideal habitat to colonise.
• Supports both mechanical and biological filtration, with bacteria that help break down harmful waste, ammonia and nitrite.
• Helps create a cleaner, healthier living space for your fish.
• Designed to reduce the noise from air pumps while consuming the lowest wattage, making it an energy-efficient and cost-effective choice for everyday aquarium maintenance.
• Unique cylinder foam design built to avoid dead spots, so water is filtered more thoroughly.
• Modular foam cartridge system that makes cleaning quick and easy with minimal effort.

How to Use

Use the sponge filter as the main filtration in a breeding tank, or as a secondary filtration system in a larger setup. It can also work as a pre-filtration unit on external or top filters. Because the filter is air-driven, it works through its airlift system. When it is time to clean, the modular foam cartridge system allows quick, easy servicing.

Suitable For

• Breeding tanks, where gentle, quiet filtration and oxygenation are valued.
• Secondary filtration in aquariums that already have another filter.
• Aquarists who want a low-wattage, low-noise filtration option.
• Both novice and expert aquarists, thanks to the simple, flexible design.

Compatibility

The flexible installation suits a wide range of aquarium setups. It can run on its own or as a pre-filter for external filters and top filters.

Available Sizes

The range is offered in several sizes. Choose from the size options listed on this page.

Frequently Asked Questions

Can I use a SOBO sponge filter as a pre-filter?
Yes. It can be installed as a pre-filtration unit on external filters or top filters.

Is it quiet?
The sponge operates silently and the filter is designed to reduce noise from air pumps, which suits bedrooms, lounges and offices.

Is it a good choice for a breeding tank?
Yes. The foam supports beneficial bacteria for mechanical and biological filtration, and the airlift system adds oxygen, which makes it well suited to breeding setups.

What do the beneficial bacteria do?
They colonise the specially developed foam and play a key role in biological filtration, helping break down harmful waste, ammonia and nitrite.

Can it be my only filter, or is it a secondary filter?
It can be used as a secondary filtration system. It is also well suited to breeding tanks, where it can serve as the filtration for that setup.

How do I choose the right size?
The filter comes in several sizes. Pick from the options on this page according to your aquarium setup and how you plan to use the filter.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

Enjoy the convenience of collection points and lockers! 📦

No more waiting at home or at work for your delivery. Simply choose a collection locker or pickup point and collect your order when it suits you.

Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

If a PUDO parcel is not collected within 36 hours, it will automatically be transferred to the nearest PUDO Kiosk or Depot at no additional cost. The parcel will then be held there for approximately 2 days before being returned.

Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.