how does this sump work

E-Shopps PF-300. I have it and it has worked flawlessly for over 2 years now. You may think it costs too much, but let me tell ya:
If that homemade overflow ever screws up, you could have $100s, if not $1000s, of dollars worth of damage to your home.

 

ok so wat am i doing here guys?

 

did you try seting the return rate while the filter thing isn't turned one so it just siphons?

 

i cant really set anything. its just plug n play

 

you said you have a ball valve

 

Is there a plug on the overflow box? As in, are you plugging it in like you would a HOB filter/skimmer/powerfilter?

 

so it just siphons? how do i know if i get it right if its just siphoning?

 

in overflow box you mean the filter right? then yes.

 

if you plug it in to start it, then unplug it. does it still work assuming the water level in the tank is high enough?

 

Only plug it in to start it, then unplug it. That is what's making it hard to balance the level in the sump with the level in the DT.