I have a huge green carpet in my 230 and have had a few small gobies go "missing" that I am sure have ended up food for this guy. My Sebea clowns would be heartbroken if I took it out though. I have not been able to keep other anemones alive with this guy in the tank though (have tried a LTA...
I think you should always check your levels before you add anything. How else will you know if you need it? Overdosing can be as bad as having low levels. With only live rock you are not going to be using much calcium so you may be able to keep everything fine with water changes depending on...
