Quote Originally Posted by zombie View Post
I personally would do it the other way around. Have the ATK unit in the sump to control that level with the extra sensor in the main tank protecting against overflows. The code you showed will work for that.

You might be an engineer if...You have no life and can prove it mathematically.
Thank You. I will just do that. Apex ATK in the sump and 3rd sensor in main tank. (This is the first code I wrote and you just told me it works!. Thank You)