Originally Posted by duncanrc
I agree that the angel needs warmer water, however as I understand the goldfish will be quite happy in warm water as well, although they will consume and excrete at a much higher rate.
This means more water changes and maintenance, but easily managed
Most people don't realize how much space the goldies need and the "Visual Perspective" noted by Elephant is an amazing eye opener. It is hard to believe the little guys are such water polluters! They like to eat several times a day due to their digestive system and the warmer water does make them do all that they do even more!!!
Not easily managed with that 20G and so many fish. PWC
will never be enough. Maybe with a 125G for that number of fish.