I'm in the middle of rebuilding my fish room and would like to incorporate the Walstad method planted tank to the fish room. However I was planning on running sponge filters as my main filtration for the system. Will the surface agitation from the sponge filter degas a majority of the CO2 in the water leading to my plants not thriving? I wasn't planning on injecting any CO2 as non of the plants I have on hand require injection. Thoughts/Personal Experience?