Fujizuna – Crushed Lava Rock 10L (Black)


Japanese crushed lava stone:

  • Has a very high porosity
  • Massive surface area for beneficial bacteria growth
  • Bacterial growth leads to improve water quality via a reduction in nitrates
  • It is a 100% natural product
  • Highly recommended for Neocaridina and Cardinal shrimps as the product is inert

2 in stock

Each bag contains 10L unwashed Lava Stone in Small, 0-5mm particle size.

Crushed lava stone or its Japanese name, Fujizuna is an attractive and entirely natural product being a volcanic byproduct, for use in aquariums, terrariums, and forms an important component in bonsai tree and succulent mixes when combined with akadama and pumice.

Lava stone is very effective at creating the ideal living environment for your aquarium as due to its porosity it provides plenty of surface area for beneficial denitrifying bacteria to develop. This beneficial bacteria has the ability to improve water quality by removing nitrates. Shrimp will also forage on Lava stone as small particles of food may become lodged in the millions of open cavities. Lava stone is also extremely popular with cichlid enthusiasts in their tank setups.

Particle Distribution:

  • +-50% smaller than 2.4mm
  • +-50% larger than 2.4mm, smaller than 5mm


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