How Do You Know?

[demonmagus]

well the questions in the title.

Thanks for your help, I know this is nooby but im gonna start a high light tank soon so i need to know

 

[Graeme Edwards]

Have a read of this.

http/www.csd.net/~cgadd/aqua/art_plant_co2chart.htm

 

[demonmagus]

awesomness ty