Yet another tank

I can't seem to control myself. I'm thinking of setting up another plant tank. I currently have a pressurized co2, excel, and a Walstad type tank using Tom's low level dosing.

I want to set up another 30 gallon tank with diy co2. I'm tapped out at the moment and don't have the dough for another pressurized co2 set up since I blew my available mad money on the 2 tanks I just set up.

I plan to run 2 wpg of fl lights. My main concern is whether I can maintain a sufficient level of co2 to avoid algae problems. I found a pretty good recipe on the AGA website and plan to use champagne or wine yeast.

My question is what level of co2 could I reasonably maintain in a diy setup and is it enough to run a 30 gallon with my planned lighting ?

Henry