I have a 30 gal biocube I've had for two years. It's been perfect and I've had no issues with it. I've grown corals and have only had two fish so far (an Ocellaris clown I purchased very tiny (he is now 2"). I also have a yellow watchman gobi I've also had for two years with my clown. I moved two days ago and I was thinking of adding another small snowflake clown. Since I moved the tank and re-arranged the rocks, etc., would it be safe to add the snowflake clown? My tank is very established and doing very well.