back flow n one-way valve problem

[plant talk]

Hi,

My co2 tank n fishtank is more than 10m apart as they each setup in the kitchen n living room respectively.There was back flow cases so i use 2 pieces of 1 way valve.The next day,the co2 bubbling become lesser in the fish tank so I off the solenold n on it again,to my susprise,the co2 gas regain its bubbling rate again.

I'm using a solenoid n timer to control the bps rate.
[:0]

[DEA]

please post in the correct section
moved to equipment