So basically a 10 gallon tank without a lid or a filter unit with live plants is good? I'd probably cover the top with something like duckweed or anacharis... What do you use??
Should I go for an inch and a half of water from the top for good measure? I have a known jumper in my hands, therefore is a mesh lid with holes about an inch wide work? Will mosquitos still lay their eggs?? Also, I think having a protective lid will keep the birds away when I have the screen up for light.