I currently have only Anubias Nana Petite and Willow Moss in my tank, with a few other mosses, hydrocotyle tripartita, and another 2 Anubias Nana Petite also on the way. I don't want to run CO2 permanently with my plan to make it a Tiger Shrimp tank. I was thinking of possibly doing a DIY CO2 system for a few months until I get a good start on the growth, and until I get everybody planted. Is it going to hurt the plants having the CO2 taken away? Is it worth doing CO2 for a few months? Or should I just go with Excel and keep doing excel with the shrimp?