"Altum" wrote in message
et...
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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Water lettuce also soaks up the nitrates and more but can get out of hand in
a tank. It also really shades plants out below it. If someone will
constantly thin them out they should work ok. They will thrive under
aquarium lights and in hard alkaline water.
--
Koi-Lo.... frugal ponding since 1995...
Aquariums since 1952
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