- Joined
- Jan 22, 2004
- Messages
- 3,019
I was thinking about rock, and I think the most ethical placed to get it is from someone who is leaving the hobby.
Coraline sand, aragonite, etc... are also part of the reef and its removal may result on environmental problems.mucktopus said:"Artificial cavities were constructed using a similar method to Steger (1985). Half-liter plastic containers were oiled with vegetable oil and filled with cement to approximately 45 mm in depth. The cement was mixed from coralline sand, cement, and freshwater. ..."