Im No expert but ive had a few tanks. Just a word of warning to watch the fish who are rubbing for white spot in the next few days ... i have had some do it before and whitespot or ich not show for little while ...... keep your eyes peeled ! It may just be nothing just thought id let you know.
Definately recommend the corydoras ! Great clean up crew on the bottom :)
So many varieties and a lot more entertaining then the shark id say ... just my opinion :)