I am new to planted aquariums and have no clue what I’m doing. I ended up having problems after installing cause I flipped my check valve on CO2 hose the wrong way. I had no clue what I did or how to fix. Customer service (Orlando) helped guide me through and trouble shoot. He was really cool about it, with an almost immediate response to my emails. I’m beyond impressed with customer service. As for the inline diffuser, was super easy, you just cut outlet hose, put in diffuser (there’s no up or down) then connected CO2 hose (make sure check valve is going right way) and your done. Creates fine bubbles. Very happy with purchase.