I'm starting a new aquarium, and I have a 20 gallon. I have 2 very small artificial planty viney things, and a small rock I placed in the aquarium. I was wondering how much cover was needed for the fish, or whether it was just a matter of personal preference. I'd say about 10% of the open space in the aquarium is occupied by these things, and the other 90% is just open.
Thanks!
Thanks!