sounds great!Yeah I know, I only want to just start with DIY see how it does, and if i feel like I need more co2, I'll start to save...and keep on saving.hahaha
OK, I'll use that check valve.
I'm also going to get a red sea co2 monitor, once I start co2...
also, make your life easier and get proper 4dkh solution for yoru drop checker, so much more better and accurate than the DIY method.