Hi and thanks for your help!
A bowl is totally unsuitable for goldfish (they have been banned in some countries) and they need something much bigger. Personally I like to see all but the fancy long finned varieties in ponds, not tanks or bowls.
If oxygen lack was the problem (and it probably was) an oxygen lpant would have done little to alleviate it. An airstone would have been better.
A: I may have to look at a different species to keep in a tank then, i was thinking a really large tank as suggested above.
As suggested, did it have carbon in it somewhere? Sounds like loose carbon dust has fouled the water. What sort of filter is it? If it was one you put under the fravel, did you clean the gravel? If not, you will have stirred up all the muck trapped in the gravel since you had not been cleaning it before this by the sounds of it.
A: Yes my undergravel filter does have Carbon Media that i did not wash out before using it, i will wash it before i put it back in i think. And i did wash the gravel and whole tank when i first put the filter in just not the media cartridge but will do thanks for the pointer!
Q?: One other thing is that i bought an Unipet No. 1601 Automatic Unbreakable Adjustable Vacuum Cleaner (it is supposed to be pump actioned) but i tried and tried to use it to vacuum the gravel but it wouldnt work and i have now broken it, I even rang the store i bought it from and they didnt know how to work it, i rang another pet store and same story there! Would be interesting to see if anyone else on here has one and if they have used it?
Some species of goldfish are supposed to be fat. Feeding once a day, a small pinch, is plenty. More important is to make suer there is no leftover uneaten food which will foul the water.
A: Thanks for that i have now lowered their food intake
Do you mean it has 2 white spots at the front of its belly, behind the gills? If so, this means you have a male who is ready to spawn if given the chance. If further down the belly it is most likely whitespot, caused by stress.
A: Unfortunately no it has whitespots before the gills so i will read more about that and maybe go and get some medicine for it.
Q?: How do you know if you have males and females?
Please do not put 9 goldfish in a bowl or tank. As said, they shuold be in a opnd. Have you considered a different species of fish to try?