Right now I am so disappointed I don't know where to start. About 6 weeks ago i set up a 100 gal tank, let it cycle for about 10 days, put in 5 small goldfish, a week later i put in 3 of my larger goldfish that i have had for 5 or 6 years that i put in our pond in the summer and tank in the winter. I also added 2 black mollies and 2 redcap orandas that i bought a the pet store. Everything looked fine all seemed to getting along good. About a week ago 1 of the redcaps went missing i looked all over for it but thought it got ate up by the others. Yesterday i went to check on my tank and could not believe what i saw, my largest goldfish was covered with a whitish film, his lovely tail was almost gone, reduced to strings, the other 2 larger goldfish and the black mollies could not be seen. Tested my water NH3 was not an issue but my nitrates were off the scale. My first though was decay and i started tearing everything out of my tank and found stuck under and in a large plastic plant 2 goldfish, 2 mollies, and the 1st missing redcap. I did a 1/2 water change and nitrates are way down and i will " now " keep checking it. The question i have did 1 little fish { about 1 inch long } start this chain reaction or am is there something else going on that i should check into. Any and all help would be appreciated.
Down in the Dumps---Al
Down in the Dumps---Al