Larry wrote:
Have read several posts about value of floating plants re water
quality and making fish real more comfortable.

I think I'd like to try but wouldn't that have an effect on all the
plants at the bottom(stunted growth and all other sorts of problems)??

Yep. You either need brighter light or low light plants at the bottom,
like Richard's crypts. Java fern, java moss, and anubias will grow
under floating plant cover. Or put your tank in the window. Floating
plants don't block the light coming in from the side.

Floating watersprite is the second best nitrogen sink you'll ever run
across. Water hyacinth is the best, but it's hard to grow in typical
fishtanks. Duckweed is pretty good too, but it has an annoying tendency
to get caught in filters. Floaters do so well because they have access
to bright light and atmospheric CO2.

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