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Oliver Knott AquaIron Sand



Pisces Natural Products joins forces with world renowned aquascaper Oliver Knott to develop a range of aquarium substrates that are in a league of their own.

The ultimate substrate for exceptional plant growth- sourced from the sub-tropical islands of Australia. Iron Sand is rich in iron and other minerals.

It's iron rich properties will promote exceptional plant growth which until now has only been available by using iron additives.

It's black shimmering texture is captivating and forms the perfect canvas for accentuating the colours of your fish.

Can be used in fresh water and marine tanks. Won't affect pH, GH, kH, TDS or other water parameters. Safe for use with fish and other aquatic life.


  • Do not wash product before use. AquaIron is pre-washed.
  • Use in an empty aquarium only. Product will cloud heavily and clog filters if added to an established tank incorrectly, extreme care must be taken and majority of water removed before adding.
  • Evenly spread over the base of the aquarium.
  • Slowly fill the aquarium with water. Laying a small plate or bag on the sand and pouring the water over this will prevent stirring up the sand.
  • Fill to about 3-4cm above the Iron Sand, this makes for easier planting.
  • Begin planting your aquarium. Make sure you spray your plants with water until the planting is complete.
  • Once planting is completed, fill the aquarium to the desired level. Using a bag or container to disperse the water will reduce clouding.
  • Allow a few hours to pass before starting your filter, to prevent any iron sand getting stuck to your impeller as it is lightly magnetic.

This product is supplied as 15kg bags only, so your ordered quantity is measured out into our own packaging, excluding the 15kg retail pack.