Originally Posted by CharlieKlein
Thanks! I really like your rock formations. How much would 30 lbs make? I'm planning on making at least 1 cave out if that, Mabye 2, and then som random formations! And then how much would sillicone be? And is it all aquarium safe?
Thank you! I actually don't use any silicon, so I wouldn't know anything about that. My guess would be that there is an aquarium safe kind you can use. I just stack the slate and make sure it is really sturdy. It's easy to do because of how flat the rock is. I don't have any large fish that are capable of knocking it over, so it isn't a worry for me. I think 30 lbs is quite a bit, not sure. I bummed mine off of a friend.
my favorite thing about buying it and breaking it yourself is personalization. They can be the sizes and shapes that you really like.