A little help plz

[wreck]

Hey everyone!

I recently set up my 65 , and I bought a jobs ato and also bought a toms aqua lifter to pump my ato water.

I made a huge mistake, I hooked up my atom reservoir and put a float valve in it, so that once the water level depleted it would auto fill back up. From the reservoir to my tank I am using a aqua lifter to top up controlled by my jobs. Well the pump shuts off when the ato tells it to but the aqua lifter keeps siphoning. Well with that happening I was slowing turning my sw into fw fml!!

Salinity dropped to 1.020 and I'm bringing it back up.

Needless to say I will manually fill resovoir few time a week, but how the heck do I get this aqua lifter to shut off and not siphon ?

I'm at a loss