Wait a couple of weeks to add any thing to your tank. Let the bio load even out first, you should not add more than one fish at a time maybe two if they are small. It will take a little bit for everything to adjust and the good bacteria to grow with the new load. Too many fish and you could crash the tank at the very least have a bad algae bloom. If you don't have green hair algae you don't want it. Once the system is completely established it is allot harder to crash but it still can. I've read on forums that guys tanks have taken up to almost 12 months to stabilize they think it was because they added too many fish at a time when they did add fish. Slow and easy is the best rule. I only have 5 fish a couple of starfish and some coral and my tank is about 6 months in. I have a bit of green hair algae but it does not spread at all the angles eat it. I have never had a bloom of diatoms or ciano algae or even red slim algae. I did get a bloom of green hair algae from a timer not functioning properly it would come on at the right time but it would not go off at the right time. I had programmed it in a 24hr program and it started working as if it were a 12 hr clock. The only green hair algae that the sea hare left it does not grow any where else.

go slow and you will be alright.

Bill