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Made from durable
An addition of copper sulphate in very small amount which is safe for marine organisms corals need it in low concentrations
Thus floating algae and finest types of clouding can be removed from the water within the shortest time
Cobalt Sulfate
Back up emergency drain will prevent the tank from overflowing
Aquael Natural Multicolored Gravel 1.4-2mm 2kg 3.5mm Made from durableAQUAEL offers a broad range of natural aquarium substrates. This line of products includes: BASALT SAND 0,1 0,5 mm is recommended for aquariums inhabited by timid, bottom dwelling fish that prefer dark substrates (the fine sand does not damage their skin); BASALT GRAVEL 2 4 mm is ideal for aquariums inhabited by timid fish that prefer dark substrates; QUARTZ SAND 0,1 0,3 mm is recommended for aquariums inhabited by bottom dwelling fish (the fine sand