Hi, Hi Guys, my new setup. Need some advice on my co2 diffuser as well. You can see below that i attached my inline co2 diffuser to my pre-filter hoping to get an excellent result but after waiting for almost 2hrs my co2 indicator is still blue. Hmm... am i doing it right? By the way, I just completed my setup about, yeah, 2hrs ago. I cant remember how long i waited last time. Do I need to wait longer?