It's a established tank, approx 90L... Ph is stable at 7.5.. GH- 120.. KH-120.. Nitrite- 0.. Nitrate is slightly pink on the test strip. (I've ordered a test kit online) so when that comes I could offer a more accurate reading, I'm not sure on how good these test strips are.. Stock 2 fancy Gold-fish.. They eat GoldFish flake food.. Once a week they have a small amount of bloodworms, as I feed these to my other fish.. And the aquarium has a heater so the temp is a contestant 22degrees .. I'm a clean freak.. So I do small frequent water changes twice a week, I just use a gravel vac and clean about 10% of the gravel water.. Ok so I'm not a fish expert.. We started off with these goldfish.. My partner has a large tropical tank.. He got a new job 8mths ago and flys away from home for a month at a time..
I'm left looking after the fish.. The tanks are super clean.. None of the fish have ever been sick, until now.. And if u think I'm doing something wrong please tell me! As for the photo, I will try for a clearer one .. Thanks =))