MC, you've got WAAAY too many goldfish in there!! On top of that, they're cold water fish and should be kept w/out a heater. The rest of your fish are not cold water. Fancy goldfish need a 20-30g minimum for ONE, then an additional 10g for each additional fancy. If you've got comet goldfish in there, minimum for one would be about 100g tank. They are a pond fish that can grow absolutely HUGE.
You did the right thing by joining up here and asking questions. I'd rehome the goldfish and continue with large water changes. You can make it work w/ keeping fish in an uncycled tank, but it's going to take lots of big water changes and daily water parameter measurements with an API master test kit.
You did the right thing by joining up here and asking questions. I'd rehome the goldfish and continue with large water changes. You can make it work w/ keeping fish in an uncycled tank, but it's going to take lots of big water changes and daily water parameter measurements with an API master test kit.