Originally Posted by 58jam

Hi,

I purchased a three litre Bi-orb fish tank about three weeks ago and having let the tank run for three days I added two fantail goldfish (one black moor and a normal orange one). Both seemed fine for a week or so and then the black moor got lethargic and died. I tested the water at my local pet store and the amonia levels were too high. I've since bought a home testing kit for amonia and through two 25% water changes (whereby I'm boiling the water first before allowing it to cool to room temperature and adding Nutrafin Aqua plus and Nutrafin Cycle before adding it to the tank). After a week the amonia level is now down to 0.25.

However, the other fan tail which lived has now developed some white spots on his tail and a small amount on his sides behind his gills. I've tested the nitrite level tonight and its reading 0.7. He's also regularly swimming near the surface and is starting to get lethargic.

Can anyone please offer advice or help?...........

Thank you in anticipation