Floating aquarium plants will grow very quickly under the correct lighting. This rampant growth is useful for using up nitrates accumulated in the aquarium water from fish waste.
Excess plants will need to be removed to allow some light to filter through to the water. Even so, unless the floating plants are thinned regularly it may be difficult to grow anything except for low light plants below the water.
Many floating plants are excellent fish foods for goldfish and some other species so the rapid growth can be useful.
Some varieties are free floating with roots than dangle in the water while other have immerse leaves with stems
but do not grow roots in the substrate.
Lower profiled plants for the front of the fish tank. Short growing grass like plants are very popular.
The centre plants that can be the aquarium's focus. Plants with e medium height are most desirable.
Taller plants that form a green backdrop. Often
fast growing stemmed plants.