Oase Biosmart Pond Filters: Efficient Filtration for Crystal Clear Water

Oase Biosmart Pond Filters offer an effective and easy-to-use solution for maintaining the cleanliness and clarity of your pond water. With a combination of mechanical and biological filtration, these filters ensure optimal water quality for a healthy aquatic environment. The unique design, featuring the Bitron (UV) range, ensures better concealment and easy access for maintenance, making it an ideal choice for any pond owner.

Features and Benefits

  • In-filter cleaning with de-sludge: The cleaning mechanism makes it easy to remove waste, ensuring a clean and healthy pond environment.
  • Mid outlet height for easy concealment: The filter outlet is positioned halfway up the tank, allowing for partial burial and easier integration into your pond landscape.
  • Integrated thermometer and cleaning indicator: The Biosmart 18000 & 36000 filters include a built-in thermometer and an indicator to notify you when it's time for cleaning.
  • Multi foam grade for brilliant clarity: The different grades of foam provide exceptional mechanical filtration, ensuring clear water and efficient biological filtration.
  • 3-year Guarantee: Enjoy peace of mind knowing that your filter is backed by a 3-year guarantee for all parts, excluding wearing parts.

How to Use

  1. Choose the appropriate model of Oase Biosmart Pond Filter based on your pond size and type (with or without fish).
  2. Install the filter near your pond, ensuring accessibility for cleaning and sludge drainage.
  3. Connect the filter to a compatible OASE AquaMax filter and watercourse pump for optimal performance.
  4. Monitor the pollutant level and water temperature displays, cleaning the filter as needed.

Best for

Oase Biosmart Pond Filters are ideally suited for pond owners who seek an efficient, reliable, and low-maintenance filtration solution that can be easily concealed within their pond landscape. It is best for decorative ponds without fish of up to 36,000 litres and for ponds with fish of up to 18,000 litres.

Oase Biosmart Pond Filter Specifications

Model 18000 36000
Pond Size (L) Decorative/Fish/Koi 18000/9000/4500 36000/18000/9000
Max Flow Of Supply Pump (L/hr) 5500 8000
Connection Size (mm) 25/32/38 25/32/38
Water Drain Size DN 75 DN 75
Sludge Drain Size (mm) 51 51
Weight (kg) 5.08 10.7
Dimensions (mm) L x W x H 382 x 555 x 408 767 x 555 x 408


What is the purpose of the Oase Biosmart Pond Filter?

The Oase Biosmart Pond Filter aims to provide effective mechanical and biological filtration for your pond, ensuring clean and clear water. It uses structured foams of fine and coarse grades and Bio Media to achieve this level of filtration. The unique design allows for easy cleaning and maintenance while keeping the whole package concealed.

How do I clean the foam cartridges in the Oase Biosmart Pond Filter?

To clean the foam cartridges, simply pull the handles to compress the foam against the plate, squeezing out the waste. The waste and remaining water are then run to waste via the integrated sludge outlet, which, in the 18000 & 36000 models, is controlled by an internal valve lever.

What additional features do the Biosmart 18000 & 36000 filters offer?

The Biosmart 18000 & 36000 filters come with an integrated thermometer to measure water temperature, a pollutant level indicator that signals the right time for cleaning, and a third type of ultra-fine foam for increased clarity.

How are the Oase Biosmart Pond Filters matched with OASE AquaMax filter and watercourse pumps?

The Oase Biosmart Pond Filters are optimally designed to work seamlessly with the OASE AquaMax filter and watercourse pumps, ensuring efficient water flow and proper filtration to keep your pond clean and healthy.

Is it possible to conceal the Oase Biosmart Pond Filter?

Yes, the Oase Biosmart Pond Filter is easy to conceal, as it can be recessed into the ground up to 1/3 of its height. The filter outlet is also situated halfway up the tank, allowing for partial burial if required.

What is the maximum pond size that the Oase Biosmart Pond Filters can handle?

The Oase Biosmart 18000 filter is suitable for a pond with fish of up to 9,000 litres and a decorative pond without fish of up to 18,000 litres. The Oase Biosmart 36000 filter can handle a pond with fish of up to 18,000 litres and a decorative pond without fish of up to 36,000 litres.

Still Unsure if This Product is Right for You?

  • Submit a question via the Reviews & Questions tab on this page, and our team will respond to you
  • Login to check your Aqua Gardening Member Price
  • Book a free Consult with the Aqua Gardening team here
  • Still Overwhelmed? Start your Gardening Journey with a free eBook here

(SKU: 124763)

Shipping Calculator

Enter the quantity of product and your Australian suburb name to calculate the shipping costs for multiples of this item only. You can calculate the shipping costs for your entire order, including international orders, on the Cart Page.

Shipping Dimensions & Weight

Dimensions: 1.00m (Length) x 0.60m (Width) x 0.60m (Height)

Weight: 25.0kg

Free Shipping Eligibility

Aqua Gardening offers free shipping on most orders above $249 that are not bulky items.  Once you place all the items you wish to buy in the cart, the combined shipping price will be shown in the cart, including Free Shipping if you are eligible. For full details please see our free shipping eligibility here.

Delivery Information

Back Order products

These are products we usually carry in stock but are temporary out of stock. These products will be back in stock within a few days. We can send you an email notification when they are back in stock if you click on the “Notify me when back in stock” link. See the full details here.

Click & Collect Only products

These products can only be collected from our Brisbane showroom as we can not ship them. If you place any of these products in your cart, you will only see the Click & Collect option at the checkout.

Fast Dispatch products

These are products that we have in stock in our Brisbane showroom, and they are available for immediate Click & Collect or Shipping. Keep in mind that if you have a product which is not listed as a Fast Dispatch product in your cart, there might be a delay on your order. See the full details here.

Special Order products

Special Order products are products that we do not regularly stock. These products will be ordered specially for you, or dispatched directly to you from our supplier. See the full details here.

Ship-To-Store products

Products marked with ship-to-store can still be shipped to us to collect in-store! Simply check out with the shipping address: 3/4 Billabong Street, Stafford, QLD, 4053. Once your order arrives, we’ll email you to let you know that it is ready to collect.


2 Years Replacement Warranty - Store warranty, this product needs to be returned to Aqua Gardening for testing and replacement.


60 Day Returns - We will provide a refund, exchange or store credit where you have decided you no longer want the product and it is in new, unopened condition. More details...