I'm fairly new to the hobby. I have had my tank for about 3 months, but I sort of inherited it from a friend who was getting out of the hobby. I am unsure of how long it had been established before I got it. I know that there's a TON of copepods though, they are all over all the rocks, and climbing all over the glass. I have no intention of getting either fish for a while yet anyway, I just got a couple of new corals and a brittle star. The mandarin will be the last fish I add. I'm just a little bit of a control freak, and I like to have things extremely planned out. Thanks for all the help!