I have a 10 gallon tank and recently got 7 neon tetras and three ghost shrimps. First thing, is that too many tetras or how many would be too many? I didn't actually plan on getting that many to start with but they were on sale plus the worker gave me one for free at petsmart. Any tips for them? I'd like them to be happy as long as well fed and their water clean. Anything I can do to enrich their lives as well? They're well into their second day with me and everyone is swimming together and no one looks stressed or sluggish. Long time aquarium keeper so water issues shouldn't be a problem and if any pop up for any reason I should be able to fix them. Aquarium filter media was in another tank before being moved to this one.