I've had two goldfish for about 18 months. In a nutshell, this is how I'm keeping them: - 180 litre/1.2metre tank - juwell daylight bulbs on for 5 hrs per day - air stone on for 5 hrs per day - Fluval 305 external filter with ceramic, carbon, two grades of sponge and filter wool. - partial (1/3) water change once per fortnight. I allow the new water to stand for 24 hours before cleaning them out, and treat it with the chloramine removal stuff. I swish the media out in tank water and I only discard half of it at any one time (except the filter wool which I chuck entirely and replace with fresh). - dose of 'good bacteria' once per week - a pinch of flake food once per day
Earlier this weeek one of the fish was sitting right on the bottom of the tank. I added some fresh water as the tank wasn't overly full and she perked up; however this evening when I got home from work she's doing it again. The other fish is fine. She's sat the right way up, her breathing doesn't look particularly laboured, and I can't see any marks/spots/damage etc on her fins or scales.
If the other fish swims past her she gets up off the bottom and does a lap round the tank, but she keeps returning to the same spot (hidden behind some bogwood, sitting right on the bottom of the tank).
The only thing I can think of is maybe she's been overfed (we've been away so they've been fed by neighbours)- she has a poo dangling from her back end if that's relevent.
Does anybody know what's wrong with her and how I can fix it?
Please help - I love these fish! Thanks in advance Elz
Thanks so much guys. She looks completely normal this morning, they're both swimming around fine and begging for food. I feel a bit happier that she's not at death's door but I'm ignoring the begging and I'll order the test kit and let you know the results as it would be good to get to the bottom of it.
From what it seems, you're housing them correctly, nice big tank, external filter, so thats good, I think maybe it's just the water changes aren't frequent enough.
Goldfish poo tends to sink to the bottom, and any uneaten food etc gets into the stones, so the filter doesn't actually remove these from the water. So a good gravel clean with a syphon, and water change every week is the only way to keep water quality good.
Couple that with neighbours feeding them I'd say they might have gotten too much food maybe, and water quality suffered as a result.
Good luck with ignoring the begging, it's VERY hard.
Right, the test kit arrived yesterday so I've tested the water this morning. Both fish have been behaving normally all week.
I'll start with the straightforward ones: - Nitrite: 0 ppm - Nitrate: 5 ppm
...I think these readings are ok for goldfish?
The other two readings are a bit more of a worry:
- Ammonia: to be honest I'm not sure. The colour is yellow but not as yellow as 0 ppm on the chart, so I think it's somewhere between 0 and 0.25 ppm. I kept the water from my last partial water change and tested it and it comes out the same. So the water changing is not making a difference? Is this too high? Will it make them ill? Bearing in mind I'm going to move from fornightly to weekly water changing, is something I should just monitor or do I need to take action?
- pH: between the low range and high range tests I've landed on a reading of 8.2. Help! I've tested it from the tap and it comes out at 7.4, so something is going wrong in the tank. What can I do about this? Could this be what made the fish ill in the first place?