Cloudy Eye Box Fish

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Hi All

Nice to be part of such a big forum for fish

Unfortunately my first post is a question about some sort of illness with one of my favorite fish.

I have 2 boxfish that have been in my tank since it was set up, which was mid November.

But i noticed today that one of the box fish has a cloudy popped out eye on his left side.

Please see 2 images attached (sorry about the large size's i didn't want to make it too small so you couldn't see)





I did do some water tests on saterday / sunday and the results were:

Ammonia 0.25
High Range PH 8.0 - 8.2
NO3 Nitrate 80-160
NO2 Nitrate 0
Calcium 360 (But Topped Up)

I have been using Ammonia & Nitrate solution which dropps the levels i have been adding this as my 2 tangs have been flicking. and this seems to have reduced allot so this solution is working i think.

I did go through a process which im ashamed of of not cleaning out the water. And only topping it up when it was low as the water looked very clean. I think i didn't do the full clean as i was used to my other 3 freshwater aquariums having dirty water which was an indicator that it was time to clean (1-2 months ago i started to clean properly).

So anyway im now doing water changes and cleaning the water and glass ect so i have got better.

I haven't done any tests since i have been using the -reducing- solution, i will do this tomorrow and give you the results (its time for me to goto bed)

I am feeding them mysis shrimp and brine shrimp (if that makes any difference)

I have had 1 death in the tank which was a yellow tale damsel (but that was cos the alpha male [im guessing] was a bully and forced her into a rock and wouldn't allow her to move.

Current tank mates:

2 Cleaner Shrimp
1 Boxing Shrimp, only has 1 claw due to fight
6 Hermit Crabs
1 Electric Blue Hermit Crab
1 Porcelain Crab (i think, blueish, with 2 orange like webs to catch stuff)
1 Arrow Head Crab, poor guy, has no eyes and 1 claw
1 Purple Urchin (thick spined)
6 Turbo Snails
1 Royal Gramma
2 Clown Fish
1 Pacific Blue Tang
2 BoxFish
1 Yellow Tang
3 Yellowtail Damselfish (used to have 4)
1 Spotted Mandarin

The tank has 8 large pieces of Live Rock, a v2 400 Protein Skimmer * a Fluval External Filter, in a 125 liter tank (UK Spec) And a air stone to help push the water around.

I think i have given too much information but i hope this helps and i hope my fish are ok.

Thanks for you time all!!!
Kev