a little confused about this post? so you have cycled tanks before and know all about it, have loads of "live rock and sand" in the tank you need to cycle and still find a need for all those fish. I tell you what if you just want some fish that's business but if your really lookin to cycle your tank, your already behind! chances are you already have a cycle going and will most likely stress out and or kill some fish in the process. also just a side note :most fish stores have chromis in stock and pretty cheap too. for as much as id like to sell my chromis its not worth the $6 ea they are probably worth to tear my tank apart to get them. hope that helpsI've cycled tanks before and this tank has a ton of live rock from my other tank as well as tons of crushed coral from an established tank.