I am new to the forum finding it a little difficult to use at the moment. I have 3 years experience with freshwater but I am now 5 weeks into my first SW tank. I have a strange hitchiker on a rock that I need id for. Also a couple of pieces of LR have gone a very dark red almost black it doesn't scrape off the rock but I'm pretty sure it's not corralline algae. I would upload pictures of I knew how too. If anybody can help with my tank or to use this forum it would be much appreciated.


