white spots = ich
strands = columnaris, a bacteria. antibiotic food is good for this

you need to have a heater to keep the tank temps steady. put in 1 teaspoon solar
salt (no additives) per 5 gallons as a tonic to help them resist disease. keep the
nitrates at or below 20 ppm for good health. feed high quality fish food, freeze
dried krill is great. dont feed a lot of food with carbs cause GF cant digest and it
just goes thru them out into the water to foul it.

always check your water parameters when fish look "off" and do some serious water
changes every day for a week, adding back the bit of salt. best medicine out there.
On Mon, 14 Jul 2008 12:24:41 +1000, "YMC" wrote:

Hi,

I have an established tank - about 100 litres -5 fantails and the goldfish
have been living there for about 3 years happily. No diseases.

One of my relatives in her wisdom bought 2 other fantails and dropped them
into my tank without informing me first. They developed spots on their tails
and bodies - like white sickly bumps. I tried to quarrantine them and they
died in quarrantine - a secondary borrorwed fish tank.

The other fantails also seemed to get sick too. I put some generic aquarium
medicine - and they recovered - a month ago.

However the spots have appeared again - and this time some of the goldfish
tails have turned like angel hair -strands.

I went away for the weekend - and the tails seem to have recovered but they
still have smallish spots. Otherwise they look active.

Now what shall I do? What have they got? And what sort of food or medicine
can I give them to help them recover?