yes, a co2 reactor is a much better method but i didnt have the time/care to make/buy one so i just use this method.Really new to this. So you can then send your co2 from your co2 tank right into your aquarium through a powerhead and not have to get a diffuser at all? I dont currently have a co2 system but have been looking at setting one up.
ifyou use DIY co2, make sure you dont suck all the air out of the line with the powerhead, because then you will have a tank full of diy co2 sugar/yeast mixturea nd a bunch of dead fish