Thinking of adding another fish

[Gumby]

Ok,
I'm thinking about adding a yellow tang and 2 perculas (Will be moving the current perc to the 30g) to my current setup in my 75g. My wife babysits small children, so I try to keep bright and colorful fish in my tank.

Here is what I have:

Regal Tang
Coral Beauty
Mandarin
Bi-color Blenny
Royal Gramma
Snails, Crabs, Conch, Tiger Tail Cuke
Percula (Will be moved to 30g tank when new percs are added)


Am I starting to get overloaded or can I handle it?

Filtration:
20+g sump (contains 8-10 lbs of live rock, 3-4" sand bed, calurpa)
Prizm Skimmer

Thanks to all.

 

[Tarasco]

I don't think that your two tangs will get along in that size tank as they get older. I wouldn't recommend the tang. The percs should be fine if you remove the other one that's already in there. If you're looking for another yellow fish you could try a yellow candy hogfish (Bodianus bimaculatus) or a yellow assessor.