ATO commands

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I have a reeffanatic Auto Top Off controler. It is hooked up to my kalk reactor and a dosing pump. When the float in the sump turns on the dosing pump pushes water into the kalk reactor and from the kalk reactor to the sump until the float switch turns off the dosing pump. I would like my AC to control how high the ph should be able to reach as it can sometimes get pretty high. So, im guessing:

if time > 0000 ATO on
if ph > 8.5 ATO off

What i think this will do is always have power to the ATO and let it perform normally until the ph reaches 8.5. Now I dont know if I have to add:

if ph < 8.5 ATO on

or if I even need this line since I already have the if time > 0000 ATO on?

What do you think?
 
No, you don't need 'if ph < 8.5 ATO on' statement. The first two:

if time > 0000 ATO on
if ph > 8.5 ATO off

are all the are necessary.

Curt
 
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