I just bough the Aquatek basic solenoid regulator on Amazon for $70 dollars. Paintball adapter, CO2 tank, and glass diffuser for another $65. It’s way better than the fluval setup and you can run it on a timer.

You can get a paintball adapter and run a paintball cylinder to get more longevity. What else are you looking to get out of a co2 system? I still use my fluval 45g kit on my 5 gallon tank, it's a bit of manual work to start and stop the co2 but it gets the job done.

I want to start a co2 tank I already have a fluval 45g starter co2 kit but want something better. It's for a 15 gallon tank I dont know where to even start or what to look for also want it to stay fairly cheap as possible.  Thanks

Help with co2 tank