Floating Plants

Lemna minor are pests... to some people, but still no match for goldfishes.

Anyways, I've been keeping Elodeas afloat... Although, it's probably not as good as Hornwort (which doesn't seem to say down :D)
 
Dakotagirl,

It can go either way. It does grow roots, so it does not get its nutrients from the substrate. It can be perfectly fine floating, or planted/anchored down.
 
water sprite, can a gift or a curse. Some how, my main water sprite sent of plantlets, before I know it, there are 30+ plantlets floating. Were very annoying to me at first but I got used to them. Any of them that grew longer than 3", I planted down in the gravel and a few days later, I got a big one.
 
Good floaters are hornwort. pennywort, and watersprite to name just a few. You can also float anacharis but I think it looks better planted.

Marinemom
 
I would use Water Lettuce, or Pistia stratiotes, if I was looking for a floating plant.

It's normally used in ponds. I got a single plant once with a crypt I purchased, and the stuff went great guns in the aquarium. It would completely cover the water surface in a week or two.

No pruning is necessary. You just grab a handful and toss it. Unfortunately, I got tired of tossing it, and got rid of it all. Now, I want it back.
 
I have Amazon Frogbit, I like this plant it grows really nice long roots. Multiplies quickly, but not at too ridiculous of a speed.

Thanks, just ordered some online.
 
AquariaCentral.com