Using a cheap dosing pump a few check valves and lines placed in my overflow box(my sump since the tank uses a canister)
pump pumps in fresh saltwater raising the water level in the tank and overflow. Every few minutes dosing pump kicks on and pulls out water from a line that is only slightly above the auto top off sensor. This drain line has a tee in it before and after the dosing pump creating a bridge that a check valve is placed on. This allows the pump to start a siphon and continue it even after the pump turns off. I simply need to add a high water sensor as a back up and all is good! Total cost $80.
pump pumps in fresh saltwater raising the water level in the tank and overflow. Every few minutes dosing pump kicks on and pulls out water from a line that is only slightly above the auto top off sensor. This drain line has a tee in it before and after the dosing pump creating a bridge that a check valve is placed on. This allows the pump to start a siphon and continue it even after the pump turns off. I simply need to add a high water sensor as a back up and all is good! Total cost $80.