Does Floating Riccia Need Bright Light And Co2?

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Ben M

Formerly pest control
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hi, i have been told that i can keep riccia floating in my tank, with 1.25wpg of light and no co2. but i have since read that it needs at least 5wpg and co2.
which is true? :crazy:

thanks
 
hi, i have been told that i can keep riccia floating in my tank, with 1.25wpg of light and no co2. but i have since read that it needs at least 5wpg and co2.
which is true? :crazy:

thanks
no plant needs 5wpg!

you can grow anything at 1.5WPG with full CO2 and ferts

Riccia is a High CO2 plant, 1WPG with about 30-35ppm of CO2 will have it going well
 
Floating it doesn't need CO2 at all. It will have enough CO2 already from being so close to the surface. 1.25WPG will be high light at the water surface.

Second the statement above. There is no plant in the world that 'needs' any more than 2WPG of light. That is one of the age old myths that has spread around the hobby and seems to increse via chines whispers over time.

As Tom Barr said in a recent article I read. A few decades ago before fluorescent lighting 'high light' at the time would have been the equivalent of 0.5WPG or so (not in actual wattages because the watts would have been higher but in actual light equivalent) and that didn't stop people growing the same or similar plants to those we do now.

AC
 

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