the lack of clean water has stressed the fish. the filter should not be the primary
source of oxygenation. the stressed fish now have some kind of disease.
Check water parameters including ammonia, nitrites, nitrates, pH and temperature.
change water until the nitrates are less than 20 ppm and the rest are 0
Add 1 teaspoon of salt per 5 gallons. This can be increased to 3 teas. per 5 over a
few days. Use rock salt with no additives.
see if they perk up
they should shed their slime coat. if they are still matt, do a salt dip on the fish
http://weloveteaching.com/puregold/d...tm#SALT%20DIPS

"lenny" wrote:

I have just noticed that they have a matt sheen instead of the usual shiny
scales too. This is all over them and a consistent look.

"lenny" wrote in message
...
Hi,
I have a 3 foot long tank with 8 small goldfish in 2 to 3 inches long.
They have been very happy for the past 2 years but are all on the bottom
of the tank now gulping. They have become very lathargic and just gulp.
This has been going on for about 3 days. I changed about 25 percent of the
water about a week ago and the filter stopped working for a couple of days
so the water wasn't being oxiginated. I have got it going again now and it
has been running for 24 hours but the fish haven't improved. I am getting
worried now. What could be the problem?
Thanks
Lenny





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