That tank is wayyyyyyy to small for those fish. I would recommend finding a new home for them that is at least 29g or more.
Looks great so far though!
Thanks! Yeah, the goldfish really should be in a bigger tank. I started out with just the smaller one and was thinking he might be alright by himself but my younger cousin won the slightly larger one at a fair and it came to live with me.
I was considering re-homing them but everyone I've spoke to wants to use them as feeder fish or want to place them in an even more crowded tank! Hopefully, my LFS will have the new tank I want next week and they'll have more room to swim happily!