Help.... Found the right place this time - didn't realise there was a section for Pets.
I have just decided to do a complete cleanout 75% water change as fish still not well. I had put some "gold" disease safe in the water as instructed by pet shop. He looks slightly better, but has a few "wisps" of ?membrane trailing from his tail (sorry if anyone having breakfast). I have prepared the water 24 hours ago with Dchl. and put some disease safe in this morning.
I have just tipped out the remaining 25% of the water and there is a creature crawling in the gravel. It is about an inch long with legs and a thin tail - lightish mud colour. Gold fish is safe in a litre of tank water in a sep. bowl. I have washed and drained some new gravel in dechlorinated water. Could this creature have arrived in the oxygenating plants, and could it have harmed my fish??
Sorry for long post - have to go to work in half an hour - I daren't be any later. I would be so grateful for any further advice. Have been trying to get a test kit, but nowhere locally. Will have to do a 12 mile trip if i can leave work early today.