Tropical Tank Setup 4' Tank Tropical Setup - What Algae Eaters To Add?

4' tank tropical setup - what algae eaters to add? - tropical tank setup

I have a 4 'tank farm tropics with 2 angels, 4 small clown loaches, and 1 rainbow shark. I have to add a terrible problem in the development of algae - the Cory / pleco could I? If you have a problem with sharks, etc.? Thanks