Purple Firefish Goby good for 40 breeder?

[Reef.Blue]

Hey guys! I have loved the Purple Firefish Goby since the day I looked into the hobby. I have a 40 breeder and was wondering if it was suitable for my tank size and gets along with most fish. I was also wondering if a Diamond Goby would be good. In about 2 years I am upgrading my tank to a 75 gallon so these fish would eventually be transported into that tank. Are 3 green reef chromis good for my tank? Thanks!

 

[Jekyl]

Just take it slow. Adding too many fish to a system whether short term or long term present their own problems. Too many fish will have nutrient and aggression/stress issues.

 

[Reef.Blue]

Just take it slow. Adding too many fish to a system whether short term or long term present their own problems. Too many fish will have nutrient and aggression/stress issues.

Thanks! I would prob be adding these fish over a 6-8 month period