Aquaroche 5.9" Hollow Trunk - best for freshwater fish but it can be used in marine aquariums as well.

Live Rock Function - neutral - For fresh and marine aquariums 

• Dimensions can vary slightly: 5.90"
• Live rock function - neutral - for fresh and marine water aquariums.
• These rocks are hand made and each piece is unique.
• Each Rock is hand made, fired at a very high temp and inert. No curing needed.