I've been reading on how to get more co2 into my aquarium and came across something from 05 that got me thinking, so i tried it. let me say i have not changed the total amount of co2 gas i'm using, but i've split the amount between my reactor and a diffuser. by adding the diffuser to my tank it begins pearling 2 and 1/2 hours sooner and i believe the co2 is better distributed through out my tank, based on observation of pearling. i don't think this is anything new i just wanted to throw this out there. I've been trying to get better saturation for a while now and i don't think i'm the only one. it's no puzzle, but it took me a while. i hope this helps someone, thanks for this site