I was hoping you could help us please. My 10 yr old daughter was recently given her first tank (130lt), it came with 2 parrot fish. The man who sold it to us said he had the set up and the fish for about 18 months and he delivered it to us , he even delivered most of the water which was in the tank.
It has an internal filter and an external filter, which i often think might be a little OTT. I also think the tank is too small for the fish so we are planning on getting a much big tank in the new year.
It has been running now for about 6 weeks with no visible problems but a few days ago my daughter came running down stairs telling me that the water was looking yellow. When i went to look at it it was evident that the fish were not happy. They were very lethargic and pale. We tested the water and found huge amount of ammonia and nitrate. So we did a few partial water changes and hoovered the gravel. the levels reduced dramticaly and are still being monitored.
But the fish have never really picked up and this morning one was dead. We also noticed that there are hundreds of tiny white worm/fluke/leech like thinks on the glass.I have tried to look up what they could be and have read the posts on here regarding planaria. The ones we have are only about 2mm long and 0.5 mm wide but there are loads of them.
My daughter is very upset at the death of 'Molly' and really does not want to loose the other fish, 'smiley'.
We are really not sure how to proceed as Smiley is still not looking very good and we want to get rid of the horrid worm things.
Any help would be appreciated