Areator tank slow overfill

[Noober]

I've been thru the ringer on this . Well set up ,2 bladders house and sprinkler,well pump ,areator pump/tank solenoid valve for areator tank,water softner . Water leaks into areator tank after a short period of time after completely shutting it off via the tank float,.a drip drip to a slight run of water till it keeps over flowing. ,Replaced Irritrol valve . water shuts off totally going into tank, only to find it coming on after an hour or two but a slow trickle of water to a combo water air hissing sound from the jet piping line. Bladders are holding pressure . Cleaned and replaced diafram in valve till I.m blue in the head. I've noticed i'm hearing a hiss out of my water softner too. Could there be a problem with water softner leaking water and or air into the lines causing an overflow of aeration tank? I can replace my float switch,and pressure swith . Can a faulty float switch cause the irritrol diafram to not close all the way ? Could the water softner be connected to a leak into the aeration tank in any way? Could the solenoid on the Irritrol 4600 be bad causing a leak?Trying to figure it out . thanks for the advice , Jerry