I think I just made my first big mistake for my tank....

Hey guys. I've had my 75 gallon reef tank (with sump) for about 6 months now and have been slowly stocking it up. Over 5 months, I've added (in this order....)



-3 Blue Chromis

-1 One-Spot Foxface

-2 Ocellaris Clownfish



However, yesterday I went to my LFS and walked out with....



-3 Yellow Tailed Damsels

-1 Cave Goby



Did I just overstock my tank? I'm running a Reefoctopus Skimmer rated for 150 gallons, but I'm still worried.