I have been running the Hydros since March. WiFi is only used on the powerstrip. It is not internet depending just local WiFi. I run a WiFi Mesh so I have 2 routers.
I have not had to worry about any issues. So the reliability is good. The more units you add together via a Collective the more redundancy you have.
If you want a bus cable from the main head unit to your sump hydros unit make sure it is a data only bus cable and does not pass power. That way the sump control unit will use its own separate power.
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