04-14-2013, 07:28 AM
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Originally Posted by smit3183
Wow, what kind of lighting do you have? Really doubt my pennywort will ever look like that with the current lighting I have. My new leaves are much much much smaller. Looks like you use Co2 system, I know nothing about Co2 systems.
Some of th e tips of my stems are melting also, what causes this?
You don't need CO2 to have a prolific floating plant display as the light isn't as critical. The right spectrum of light is needed (although it may not be as critical either as long as it has some of the right spectrum) but not the intensity as the floating leaves are so close to it. They also get CO2 directly from the air which not only has a higher concentration, much higher than you can have in water, it is also the easiest for the emmersed leaves to absorb. The only caveat is that the floating plants probably don't release as much oxygen direectly into the water.