six line wrasse with a big eye

[Zortru]

i have a six line wrasse and today I noticed that his left eye is bigger than the other, it wasn't until yesterday.
I have this fish for 4 months now, i never saw any aggression with the others fish, i have two clown fish and a yellow tang, he is eating normally. The PH of the water is 8.4, he is swimming around as usual, the only weird thing is the bigger eye( I couldn't take a picture cause he wont stop swimming).
The only thing i put in the water yesterday was the Seachem Reff Zooplankton, but im using it for over a month now.
I'm very worried about him, any ideas of what its and what i can do are welcome.
tks for the attention.

[melosu58]

It is called pop eye disease. Usually comes from unhealthy water conditions. Check all water parameters. Adding the plankton could be the cause. It might not have been a issue at the beginning but could be after adding for a month. Again check your water esp. for nitrates and phosphates.

[Zortru]

ill do it, thanks

[melosu58]

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