Your pH is so high it's off my chart, but anything over 8 means you have
virtually no CO2.

I wondered if his plants were stripping all the CO2 out of the water, creating
that artificially high pH. (If so, increasing surface turbulence should bring
it down.)

But since he's got less than one watt per gallon, and says his plants aren't
growing well, I dunno...


Leigh

http://www.fortunecity.com/lavender/halloween/881/