Carnelian Rock – per lb
Carnelian stone is a small, heavy 3 – 6 inch diameter stone used in aquariums as a hardscape. The stone is pH neutral and safe for aquariums, vivariums, terrariums, and bioactive setups.
Product Specifications
| Feature | Size: 3 – 6 inches in diameter |
|---|---|
| Material | Carnelian stone |
| Color | Red-orange |
| Chemical Property | pH Neutral |
| Usage | Aquariums, vivariums, terrariums, bioactive setups |
FAQ
Is carnelian rock safe for use in a fish tank?
Yes, carnelian rock is pH neutral and safe for use in aquariums, vivariums, terrariums, and bioactive setups.
What is the typical size of carnelian rock pieces?
The stones range from 3 to 6 inches in diameter.
Does carnelian rock affect water chemistry?
No, carnelian rock is pH neutral and does not alter water chemistry.

Joe Short –
The carnelian rocks added a nice natural look to my aquarium. They are sturdy and don’t break easily. The color is vibrant and stands out well in the tank. My fish seem to be fine with them, and the water parameters stayed stable.
Rose Pullman –
I used these rocks in my terrarium and they hold up well. The size is consistent and they look great. No issues with water pH or fish behavior after installation.
Benjamin Walker –
Great addition to my bioactive setup. The stones are dense and don’t shift or erode. They blend well with the other hardscape elements and look very natural.