I have the same concern as well, but I think theres some good mechanism in place now. I am using google wifi routers (two of them) to build a mesh network at home/garage. Each of these little beasts can easily support 12-15 devices. So theres redundancy as well as isolation from my comcast/xfinity router. Which means my devices (reef-pi, model railroad controller, octoprint, garage controller, terrrarium controller etc etc) will continue function even if comcast router dies or disconnect from internet. This also gives me the ability to watch their health state from mobile app anywhere in the world and poke a hole (port forward) on-demand, without relying on xfinity's expensive packages (my xfinity ??). Its still need to be proven for long term usage, as i just introduced this in less than a month before, but i think this is something reliable enough that I can recommend. I'll keep you all posted about my learningI would not be comfortable relying on WiFi for critical aquarium equipment.