Hi I am hoping someone here might be able to help. I have bought a second hand tank today, it use to be a marine tank. I have started to empty the filter and found two rocks in the bottom of the filter with "things" in them. I am guessing they are whats called live rock. There is a tiny bit of water in the filter so I have put the rocks back. I dont really want to just throw it away as there is life in it. What should I do with it?
Many thanks
Many thanks