Riccia Fluitans Suggestions

Hello,

I'm new to this plant Riccia Fluitans but it's looking awesome so far floating in a bunch around my tank. Question...Should I flip the entire chunk once in awhile? The top is looking nice and green but the bottom doesn't get as much light and there is some signs of slight die-off under there. I'm thinking by flipping it upside down, the bits that previously had low light/no light would come back but the bottom (previously the top) would slowly get less green ? Any experience with this plant? Should I leave it alone? --I'm just trying to get as much growth as possible.

Thanks,
Dean