Apex with ATO

Hello All,

I am trying to figure out an ATO system for my soon to be operational 120g reef (woohoo!!). Anyone use the Apex controller to do ATO? What float valves and mounts do you use in your sump?

I was thinking of having 4 float valves (1 to turn on ATO at low water, 1 to
turn it off at high water, 1 located a little higher as an emergency shutoff
of ATO, and 1 submerged in the water to shut off the return pump in the case of extremely low water levels.) With this plan, one float valve will be completely submerged - anyone now of a good submersible float valve?

Thanks,
Mark

 

I would think that you'd only need 3.

1 for emergency TO off.
1 for emergency return pump off.
1 for the ATO.

You shouldn't need 2 switches to operate 1 on/off function.