Return pump water level

[Shane2019]

My current water level is about an inch over my return pump. Is that to low? I am also trying to figure out where to put Apex probes. Second chamber and return pump are the two areas I am thinking about. Any suggestions appreciated.

 

[vetteguy53081]

Should be at leas2-3@ as it has potential to suck air or run warmer as they’re water cooled