Natural Black Bazalt Stones. Fraction: 3-5mm.

  • Natural black gravel. Beautifully decorates the tank and emphasizes the colors of fish and plants.
  • Natural Black Bazalt Stones. Fraction: 3-5mm.
£1.45 - £37.95
/ piece
Before we process the order with this product, the prepayment in the amount of £1.45 may be required. Detailed information will be provided in the order summary, before its placement.

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Natural black gravel, bazalt stones.

  • Fraction (grain size): 2-5mm.
Excellent substrate for all types of biotopes, especially recommended for plant aquariums,
It guarantees very good rooting and rapid growth and attractive appearance of plants.
Basalt colour has a great impact on the coloration of fish and shrimps.
Indifferent to water parameters (does not change the pH value and water hardness).
Non toxic!
  • Beautiful natural rinsed gravel substrate
  • Beautifully decorates the tank and emphasizes the colors of fish and plants.
  • Its color does not stress the fish. 
  • Ideal for shrimp tank and plants.
  • Does not affect the water parameters
  • It guarantees good rooting, fast growth and attractive appearance of plants. Ideal for bottom fish, 
  • Diameter about 2-4mm, 5-10mm

It comes in two sizes:

  • Fraction: 2-5mm.
  • Fraction: 5-10mm.

Must be rinsed several time before use.


How much substrate should I buy??

Recommended substrate thickness: 4-5 cm

The amount of substrate needed for a standard aquarium:

60 Liters (13 gal. UK): 8-10 kg 
112 Liters (24 gal. UK): 5-20 kg
200 Liters (43 gal. UK): 25-30 kg
240 Liters (52 gal. UK): 35-40 kg
375 Liters (82 gal. UK): 50-60 kg


For example, if you have a 60 liter tank - you should buy about 8-10 kg of substrate.

Dear customers!
We inform that the substrates, sands, gravels  in our offer are 100% natural materials, therefore, sometimes there are differences in size, shape and color of the same kind, depending on the batch and the degree of drying. 
Please take a photo of in your bid as an overview presentation.
The product is originally packaged in 2kg bags to an accuracy of 10% (this means that one bag can weigh between 1.8kg and 2.2kg). 
Difference in weight and color can not be a reason for complaint. By purchasing these products you agree to the above rules.
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