Riccia
Single specimens of these plants are tiny (1-2 mm), but they spread to form a
floating carpet. They grow quickly, especially under strong lighting, and so they
must be cleared on a regular basis.
Riccia fluitans
The floating riccia provides shelter for fry, and a breeding ground for the infusorians
that often constitute their first food. This plant prefers moderately hard water,
with a pH of around 7.
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