#foundinthebeach

Hello, my mother find lovely Rick when she was visiting. I would love to add it to the tank but I’m scared that something can go wrong. I clean the rock with sponge and I left it under the sun for a week. After that I put vinegar in bucket and left it there for another week then rinse it with...

Hello guys, i found these rocks when I was in croatia and im thinking about adding them in my reef tank, because they are very porosus, my question is that are these rocks good or bad? I want to improve my filteration with them