High-Quality Aquaponics Grow Bed for Versatile Gardening Solutions

Introducing the perfect solution for your aquaponics gardening needs, our Black 400L Aquaponics Grow Bed is made of durable High Molecular Weight Polyethylene (HMWPE). With its 1290 x 850mm dimensions and 450mm depth, this grow bed is suitable for most domestic and commercial applications. Its sturdy construction allows for freestanding use above or below the ground, providing a long-lasting gardening solution that won't deteriorate over time.

Features and Benefits

  • High-quality HMWPE material: Ensures durability and longevity, outlasting fibreglass alternatives.
  • Freestanding design: Can be positioned above or below ground with minimal base support, making it ideal for various garden setups.
  • Optional overflow hole and bung: Can be easily sealed if not required, providing adaptability for various uses, including fish tanks.
  • Generous capacity: With a total capacity of 400L (usable capacity of approx. 370L), this grow bed accommodates a variety of plant and aquatic life.
  • 20-year warranty: Provides peace of mind with protection against UV discolouration and cracking when installed correctly.

How to Use

  1. Choose a location for your grow bed, ensuring it is either above or below ground and on a stable, flat surface or frame base.
  2. If needed, follow the instructions to silicone the bung or grate in place for the overflow hole. Avoid drilling new holes without consulting the warranty guidelines.
  3. Fill the grow bed with appropriate growing media, such as gravel or expanded clay pebbles.
  4. Add fish or plants as desired, ensuring that their needs are compatible with the size and conditions of your grow bed.

Aqua Gardening Suggests These are Best For

This high-quality Aquaponics Grow Bed is best suited for individuals and businesses looking to create a versatile, long-lasting aquaponics system. It is ideal for those who require a durable and adaptable solution that can be used not only for growing plants but also as a fish tank when needed.

Notes from Aqua Gardening

  • To maintain the 20-year warranty, ensure proper installation on a flat frame base or on a compacted or concrete ground surface.
  • Do not drill new holes in the grow bed without consulting the warranty guidelines as this may void the warranty.
  • For shipping quotes outside of the regular courier destinations, please contact Aqua Gardening online sales.


What material are the Aquaponics Grow Beds made of and how durable are they?

The Aquaponics Grow Beds are made from HMWPE (High Molecular Weight Polyethylene), which makes them highly durable and suitable for both domestic and commercial applications. These grow beds are strong enough to be used freestanding above or below ground, and they do not deteriorate over time like fiberglass.

What warranty does the 400L Grow Bed come with?

The 400L Grow Bed comes with a 20-year warranty against UV discolouration and cracking. To be covered by the warranty, make sure to install the grow bed on a flat frame base or on the ground on a compacted or concrete base.

Can I use the 400L Grow Bed as a fish tank?

Yes, the 400L Poly Grow Bed can be used as a fish tank.

Does the Grow Bed come with an overflow hole and fittings?

The 400L Poly Grow Bed may be supplied with an overflow hole approximately 50mm down from the top rim. It also comes with a bung and a small grate that fit the hole. The hole bung or grate should be siliconed into place if they are required to be used to seal the hole.

How do you ship the Aquaponics Grow Beds?

At Aqua Gardening, we ship using couriers within Queensland and interstate. You can obtain a shipping quote on the Cart page for our regular courier destinations. If it does not provide you with a quote, please call Aqua Gardening online sales.

What are the dimensions and capacity of the Black 400L Grow Bed?

The rim outer dimensions are 1290 x 850mm, while the curved rim width is 40mm. The base outer dimension measures 1170 x 740mm, with a slight taper. The depth is 450mm, providing a total capacity of 400L and a usable capacity of approximately 370L.

Still Unsure if This Product is Right for You?

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(SKU: 128784)

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Shipping Dimensions & Weight

Dimensions: 1.29m (Length) x 0.86m (Width) x 0.45m (Height)

Weight: 14.0kg

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Delivery Information

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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.


1 Year 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...