Do you need CO2 in a dirt substrate planted tank?

I feel there is more then enough CO2 when you first dirt a tank. The gasses escape from the substrate, mainly co2, plants will grow great with this. Excess co2 could A. kill your fish, B. Cause an algae problem. There are exceptions to this, but I don't wanna confuse anyone..
Thanks for checking out my Do you need CO2 in a dirt substrate planted tank? videos. If you like what you see or hear rate this video or add a comment. Ask me questions. For more video, Live chat and custom user profiles to show off your planted tanks planted, reef or other fishtanks, check out www.fishtanktv.com