My goldfish pupil has filled it eye?

Question

i've just set up a gold fish tank brought some fish and i've now notice two of the fish pupils have poped and fill the eye black the other eye look fine the bad eye looks ok but for it's all black. please can any one tell me if this is normal my other fish look ok. i've done testes on the water.
ammonia is 0
hardness is through the roof but that ok for goldfish i think
ph is 7
n02 is about 5
and n03 is about 80
i understand the nirates will settle down in 4/6 weeks but i can't find anything on this eye problem
please help i don't want my fish to die

Answer 1

The nitrates must be removed through regular water changes - only ammonia and nitrite are removed by bacterial action. It would be better for your fish to keep these under 40 ppm. Your nitrites are dangerously high - these should be below 1ppm - you're in need of an immediate water change! I'd actually do several in the next few days if your nitrite level is this high (double-check your results).

I'm not sure what to make of your description of the goldfish's eye. I've seen come calicos where the black extends all the way out to the skin in one eye (see photo: http://www2.netdoor.com/~tlothian/GoldfishAndKoi/Calico01.JPG ) but not the other, so this could be a natural occurrence. I would suspect as much unless you've noticed the eye has actually changed since you first got the fish. It looks a little odd though, if the black isn't the same diameter in both eyes.

If the eye has started to bulge out (and the variety isn't one that should have telescope eyes), this is a condition called popeye (Exophthalmia) - this is usually caused by an infection, so treat with a broad spectrum antibiotic. If the eye is clouding over, similar to a cataract, it could be a fungal infection.

Without being able to see your fish, It's difficult to do an accurate diagnosis. I'd suggest a water change and the problem, if it is one, may clear on it's own. If it's sticking out (like popeye) or cloudy, more specific treatment info is provided in the links below:

Answer 2

that's cloud eye, and is a demonstration the water high quality is under optimum. it could additionally be from eye irritations from different fish or parasites, bacterial infections, incorrect eating ordinary, etc. ninety 9% of the time that's something incorrect with the water, like severe nitrates. Do a water exchange and get the water high quality as severe as attainable. you're able to be able to could desire to manage for cloud eye if he has it undesirable sufficient, yet maximum circumstances basically recuperating water high quality will do the trick. google "cloud eye" for greater counsel.