I have one of those little jet pump pressure tank combo units with a 4.4 gallon pressure tank that works, but since the tank is so small the pump comes on everytime someone flushes a toilet. I put a 44 gal pressure tank inline to create more water capacity to reduce the frequency of pump start/run. This did not seem to work.

Do I need to put in a new jet pump so this system will function?

If the pressure tank says drawdown 30/50 operation. What type of pressure tank should I use to optimize the system. Also how do you dial in the system to get optimal pressure / capacity?

System is powered by a substantial 48v solar electrical system with 110 not 220.

Thanks for your help