Fluval co2 setup
So is set up my fluval 88g co2 on my tank today as soon as i hooked it up it read 1300psi then i come back 15 minutes later and find it at almost 1100 psi i was only running 1 bubble every 2 seconds. Then i twisted the thing on the side a tiny bit and the psi jumped back up to 1200psi
The bubble counter and diffuser are in the tank and not leaking and i put the co2 tank and top part in some water while it was hooked up and saw no leaks
How could the psi have gone down so fast then back up?
What else should i try?
55 gallon planted tank
10 cardinal tetras