What's my bioload?

A small puffer could be another good idea, depending on what invertebrates you have/want. If I were you, I'd also be looking for something with colors like a royal gramma.

 

I didn't even know a small puffer was reef safe, yeah thanks for the advice everyone. I couldn't agree more about the rule, that's old school, I think each fish has it's own character and needs. Perfect example with the groupers. I also have a peppermint and pincushion urchin that's a serious frag hoarder ! I think you people have convinced me to ditch the Atlantic for maybe something else. I had 8 blue green chromis but they picked each other off until 2 were left.
Isn't Royal gamma agressive ? Annoying little fish ? Midas is a must have for me so I'm glad you find it a good choice

 

It depends on the puffer. Smaller ones tend to not be a problem as much. Just do your research on the species before you decide on one. I don't believe there are nearly as many that peck corals as angels, but they do tend to destroy shrimp, crabs, and small snails. Then again, my puffer never touches any snails or hermits. Puffers have some of the most varied behaviors of fish.

 

So, we might as well have a little reality here. Stocking levels have nothing to do with inches or how many... stocking depends on how much O2 your water holds and how fast they will suffocate with the power off. It also depends on what kind of habitat they have. Too few safe places leads to a lot of fights for them.

Most folks just jam fish in, that does not mean they are healthy. Stressful surroundings leads to disease. You want to know they have plenty of oxygen to breath, and plenty of room to feel safe.

Yes, get rid of the Tang, and you could add another 1 or 2 small fish as long as all the small fish have plenty of reef.