I've been looking for build threads ,with no success, for a self filling water top off system. I have a hot / cold and drain in my garage and was thinking about adding a r.o.i water system that would fill a reservoir and that reservoir would feed my sump. I had it set up last time with just the reservoir being manually filled by me. I have float switch and pump from that set up already. does anyone have a good link to a set up like I'm thinking about? or what else I should be looking at to incorporate some safety items into this? thanks in advance!