TheCommunityCichlid
Aquarium Advice Addict
I use red lava rock in my tank. Easier to drill and make holes in. Still a huge pain but can be done with a nice big carbide drill bit and a hammer and a chisel. I bought about 150 pounds of boulders for $20 then used a sledge hammer to break them into smaller pieces. I had some petco ones with holes in them to make some caves I made two of my own before I decide its to much work. It's easier to stack and make caves then to drill holes in the rock. Trust me