I am very new to aquariums so I joined this site in order to learn from others. My granddaughter had a 2 gallon aquarium that had 2 small goldfish in it. They have grown quite a bit, so we bought her a 10 gallon freshwater aquarium. Any advice would be greatly appreciated! Thanks!
Have you got a filter? That makes a big difference esp for a dirty fish like a goldfish - the tank stays cleaner the fish are happier. An internal filter like a Stingray Elite 10 costs about £15-20 (no idea about dollars), so filters are fairly cheap
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Welcome to AA op, I advise against goldfish because for 2 you will need 20g for the first and 10g extra for the second goldfish. If you want fish for a 10g that your grandaughter might like check out guppies or a betta with snails and a small group of schooling fish.