Hi Dave,

The one in the sand seems to be getting redder the closer it gets to the
light, so a combination of the light and flourite must be the key.

Thanks


Dustin

"Dave Millman" wrote in message
...
Mark Trueman wrote:

Might not be co2, may be light.

Then again, it might be the Flourite.

We're not going to reesolve it here. Dustin, Rotala macrandra grows pretty
fast.
Adjust the light, see what happens in the two substrates. My R. macrandra
grows
very very red and 1-2 cm per day with 3WPG, 25ppm CO2 and 100% flourite.