Vulcan Black Rocks MBreda have predominantly black color.
The MBreda® line of Vulcan Rocks was developed especially for the Marine aquarium.
Manufactured with special methods that create pores and cavities in the rocks, providing unique and natural looking rocks, similar to volcanic rocks.
The high porosity of Vulcan Rocks provides large surface areas for beneficial bacteria to colonize. They help in the biological filtration of the system, and can be compared with biological media.
Due to its low density and high porosity, MBreda® Vulcan Rocks retain water inside, changing their weight in relation to moisture.
MBreda® Vulcan Rocks are sold by volume:
Each 1 liter of Vulcan Rock MBreda® has a volume equivalent to 2.6 kg of common rock. Volume-by-density comparison with natural Black Rock.
Approximate size of rocks in centimeters
L x W x H (Length, width, height)
Rocks with alkaline pH.
Composition: White structural cement, coal powder, calcium carbonate, powdered perlite, expanded perlite.
Water hardness specification:
0 - 70 ppm
0 - 4 dGH
70 - 135 ppm
4 - 8 dGH
Medium hardness (Vulcan Black Rocks)
135 - 200 ppm
8 - 12 dGH
Hard (Vulcan Black Rocks)
200 - 350 ppm
12 - 20 dGH
+ 350 ppm
+ 20 dGH
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Mbreda is a 100% Brazilian industry that for 14 years has been manufacturing
products and supplements for freshwater,
reef and aquascaping.