- Joined
- Jul 9, 2018
- Messages
- 21
- Reaction score
- 5
hey guys,I have a marine tank that has been running for about 8 months and I want to add 1 more piece of rock, I went to the shops and found a piece of purple lava rock and I was wondering if it was alright to put that in the tank. My tank is 120 litres (31 gallons) and has about 4 large brick sized pieces of live rock in it. Thanks