Planted Tank Enthusiast
Join Date: Jul 2014
Location: California for school, Arkansas for home
Java fern, it thrives in a 2.5 gallon >1 LED WPG tank with very infrequent water changes.
If it's legal in your state, I've heard wondrous things about Hydrophila polysperma...
Duckweed, it will form a layer on the top of the tank, and the roots will look like a reverse carpet on the top of the tank...that is, if the endlers and snails don't eat it first.
Hornwort can make wonderful floating tangles that look quite decent if cared for right, or you can plant it
Elodea is like the cold water version of hornwort, both thrive under pretty much any condition.