For a beautiful, natural looking aquarium, it is common to include natural materials such as coral, substrates, and rocks. It is very important that you only use only decorations that are safe to use in aquariums, and if you have a salt water aquarium, it is important you use decorations made for salt water aquariums. Many types of decorations could leak toxic compounds or contain minerals that could be dissolved and slowly poison your fish.

Combining a particular substrate with aquarium rocks help create a natural looking environment that is both eye pleasing and beneficial to your fish providing them with a sense of orientation and overall health.

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