Floating plants?

[Deadeye]

Duckweed is a pain. It blooms like crazy, and you won't stop it. Red root floaters are better, and susswasertang is a submerged plant that doesn't need roots that has been forgotten. Also, Marimo Moss Balls are one.

Marimo can float?

 

[The Masked Shadow]

Oh! Hahaha! I thought it said plants that don't need soil. Marimo will sink.

 

[confusedfishkeeper]

Thanks for the very helpful replies. I have Ludwigia as a floating plants in my tank. Bought it just a few days back. Does it need a substrate?

Also, for a tank which is 36 inches long, 18 inches high and 20 inches deep, what would be a suitable light? I have a Sunsun LED which is 20 inches long / 24 watts.

 

[eon aquatics]

i would rather keep hair algae than marimo
im growing my elodea on the bottom of my 20 gallon but people say they can grow from the top