Sv Aquarium Deco Black Slate Rock Medium 18-23cm 1Kg
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Natural black slate rock for aquariums, derived from metamorphic shale for an authentic, natural look
Black Slate is a metamorphic sedimentary rock that is derived from shale and is very popular in aquarium decoration. This rock is typically flat and it is very useful for aquascaping caves and creating surfaces that create refuge and spawning sites for aquarium.
Product Features
- Natural black slate rock for aquariums, derived from metamorphic shale for an authentic, natural look
- Ideal for aquascaping, with flat surfaces perfect for building caves, ledges, and layered designs
- Creates refuges and spawning sites, helping provide safe areas for fish to rest and spawn
| Size | Weight |
|---|---|
| 18-23cm | 1Kg |
FAQ
What is the origin of the black slate rock?
The black slate rock is derived from metamorphic shale, making it a natural and authentic material for aquarium decoration.
Can this rock be used to create caves in an aquarium?
Yes, the flat surfaces of the black slate rock make it ideal for building caves and creating sheltered areas in aquascapes.
Is the rock safe for fish to live around?
Yes, black slate rock is non-toxic and safe for fish. It provides natural surfaces for refuge and spawning without releasing harmful substances.

Emma Slater –
The black slate rock arrived quickly and looks exactly as described. I used it to build a cave for my betta fish, and it’s holding up well. The flat surfaces are perfect for creating a natural-looking habitat.
Owen Miller –
Great quality and natural appearance. I added it to my planted tank and it blends well with the background. My fish seem to enjoy the shelter it provides.
Olivia Rees –
I’ve used this rock in multiple tanks and it’s durable. The size range is consistent, and it’s easy to arrange in layers or caves. Very satisfied with the product.
Lucas Paterson –
The rock looks authentic and fits well in my aquascape design. It’s not too large or small, and the weight is manageable when arranging.