I just started my first planted tank. I have a standard Hagen 25W kit with
the standard 24 inch Aqua-Glo fluorescent.

My PH is 7.6 and need to lower it for the fish anyways.

I am debating whether to add CO2? What do you think? I know about the DYI
ones but looking at the Hagen Plant-Gro :

http://www.mops.on.ca/cgi-bin/SoftCa....asp?E+scstore

I'm also wondering if I can use this unit as reactor or use my own mixture.

Thanks,

Frank