Rooby Roo wrote:

Hi there, and thanks for replying.

I have been using a 5 in 1 'Tetratest' kit which gives the following
results:

nitrate: 50 mg/l
nitrite: 0 mg/l
GH: 6d 10d
KH: 6d
pH: 7.6


Ok, your nitrites are fine, nitrates are too high - do a 30% water change
every other day until you get them down. PH looks fine.



Afraid I don't know the tank temperature - can you tell me what it should
be?

Around 72-78Degrees is normal

I'm shocked to hear that it is too small! I was told by the shop I
got it from that it would be the right size for my fish - they said there
should be a maximum of 2 inches of fish to every gallon of water, so thanks for telling me that.
The fish are pretty small at the moment - the goldfish is only a
couple of inches, the comet two and a half and the shubunkin is about the
same, or maybe 3" at most - but if the tank isn't big enough for them I'll
have to look at getting a new one.

Definitely not big enough. Goldfish produce more wastes than tropicals
for example. They also grow bigger, meaning a lot lot more waste.
Some fish shops have a tendancy to give out incorrect information. Maybe
because some have inexperienced staff (who've probably never kept
goldfish before).

Yes, I believe the 'white spot' was ich, and I did continue treatment after
the outward signs of the disease disappeared.

Excellent


If there was no fungus, ensure there are no sharp objects in the tank
that he could have clipped himself on. Also ensure thay any gravel
isn't sharp. If you keep the water quality good then the swelling may
go down naturally.