I have a 50g with 2 Angels. Heavily planted. I’m only running a sponge filter, and just started injecting co2. I have the sponge go off when the co2 kicks on. I felt like the sponge would gas off the co2 to quick. Fish seem fine with this setup. Just seems like I need some circulation to distribute this co2 throughout the tank better. Any suggestions? Will the co2 get into all the water volume with the way I have it? Thanks in advance