a whiff of grapeshot

Can two royal grammas co-exist in the same tank?

I've been absent for a while because I've been too busy with college and work, but I'm back now, hopefully for good. I've got a few upgrades coming soon and also some cool "side-tank projects" I want to share with Reef Addicts. But what really prompted me to log on tonight was this: I've been going to school in the mornings and working mostly the graveyard shift, because of this I don't really have much time to interact with my tank other than maintenance. This evening was the first time ...

My corals are not looking good... I tested the water and everything is ok except the nitrates are a little high, although I don't feel like this is the reason why. I've had them high before but it didn't affect anything. Recently I had an anenome die but I took it out right away, this was not even a week ago. I don't over feed and I just did a 20% water change. The tank is a 40 gallon with 10 gallon fuge. My soft corals were the first to show signs that something was wrong and now my long tentacle ...

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I came across an interesting interview with Giacomo Bernardi, professor of ecology and evolutionary biology at the University of California, Santa Cruz, while listening to one of my favorite podcast, Science Sort Of..., and I wanted to share it with community at ReefAddicts. They talk about the unusual behavior of a particular wrasse that was observed in nature. It is the first fish ever reported to use tools!
Here is the link to the podcast episode which I strongly recommend everyone listen ...

I just added a common firefish to my tank. What can I expect in terms of behavior and habits?
So far it's just been hanging out in front of a flow pump. I'm just glad it hasn't jumped out...
It's eating well and not fighting. Do they adapt well to reef tanks...?