Ditch the baking soda and citric acid, go with yeast and sugar. It will give you a steadier, more long lasting supply.
Google DIY co2 jello method, I'm using jello and the exact same kit as you have. The jello and yeast go into the bottle with the pressure gauge, with nothing in the second bottle. The only thing I did to modify the kit was cut off the tube and ball thing that hangs into bottle A until about an inch under the cap, you don't want that in your yeast solution. All this I set up yesterday, and it's been giving me a very steady supply of co2, no stopping whatsoever. It took a few hours for the co2 to build up, but it actually started working with under 1 kg/cm pressure below the green zone, and with a ceramic diffuser no less.
Is it cheaper to use sugar and yeast? I've heard it can smell and that citric acid and baking soda is more efficient, but it also requires me to buy 200 gallon acid and 200 gallon baking soda every three weeks and that seems a little inefficient to me.
I also realized, after a long time waiting for it to arrive, that my bubble counter doesn't fit the airline tubing yay, so that's another thing I have to buy again, I'm looking at the fluval one and even though it's kinda ugly and expensive It's my best bet
I'm the exact opposite haha, I looked into pressurized but my brain couldn't handle it. Maybe in the future!
same here! Diy co2 was the only thing I could wrap my head around hahaha