Hi, i'm a fish keeping newbie, and I just got a 10 and 20 gallon aquarium. The 10 is 10.5 x 20.25 x 15 in (w x l x h). The 20 is about 14 x 26 x 19 in. I purchased the 10 and then my uncle gave me a 20. I think I'll put pool filter sand and plants when I cycle them, but I don't really have any ideas for stocking. I kinda want a centerpiece fish and schooling fish for them. I think I want pygmy cories and shrimp in my 20 and shrimp in my 10, will that work? I would greatly appreciate any ideas!