i have a 5 pound pressurized cylinder and milwaukee regulator in my setup. I just need to diffuse the co2 now. Will a glass diffuser to a good job of diffusion in a 20 gallon? I have 65 watts of pc lighting and i need good co2 levels. My drop checker gets a greenish yellow color with the current using a mini internal filter as a diffuser but it is always getting dirty and a pain to clean? Should I use a glass diffuser, buy a reactor (if so,what kind....not expensive either) or should i use a powerhead?