It looks like the eye is bulged out. it could be bacterial or gas bubble disease or? Also I would look at the water quality pH, do, nitrates. Florida water runs a high pH. also jay hemdel in advanced marine aquarium techniques says eye problems can occur with vitamin deficiencies eg riboflavin for ...

HI,I was wondering if you are open yet. My niece lives near you and wants to see it.

there are 2 books that help a lot on planning aquarium exhibits. they give a lot of specifications. I hope they are of use to you.
Fish and Invertebrate Culture by Stephen Spotte published by Wiley Interscience
Aquacultural Engineering by Wheaton published by Krieger
water flow through pipe ...