ReeferMike
Guest
I am upgrading my tank from a 20L to a 40 cube next week. I currently have 2 clowns and a mandarin. Now here comes the question. I would like to add another pair of clowns once the new tank is set up, but the pair that I like are babies (4-6 months old) vs my 1+ year plus clowns. Will that be an issue?