So I'm starting to get tired of topping off water, especially when I go on vacation as it really limits me to a few days worth, and other than getting a larger sump, I'd like to automate this task. Plus when I went to Hawaii for 10 days my dad was in charge of the tanks and was a bit sloppy with top offs, and quite frankly I don't trust him at all with my tanks, or anything else for that matter as he has a tendency to not follow directions as asked (even when they're written down). So looking for some advice/opinions. So basic premise is fairly simple, reservoir of water, sensor to detect water level, pump of some sort to move water, some sort of safety check. Reservoir: No problem, garbage can full of water Sensors: Quite a few options here, the overly expensive Tunze Osmosolator, to the more reasonably price floatswitch from autotopoff.com, I've read quite a few mixed reviews on the JBJ ATO, then when I found out it's basically just a couple of float switches with no pump at all I was turned off even more. I'm leaning towards the float switches/relay from autotopoff.com simply because its simple in design and that seems more robust in the long run. Pump: I liked the idea of an aqualifter simply because it moved water fairly slowly, used very little power and was fairly cheap, then I read quite a few reviews of issues with them, although I don't know if its because they used it with kalk reactors or if they really are garbage. Option 2 is a cheap maxijet which while they really aren't meant to push water, I currently use one to move water from my reservoir to the tanks. Safety check: Step one is to tie it in with my AC3 and simply keep the power turned off except for 1 hour a day, this also would help with consistent pumping as the water level triggered the float throughout the day, also would safe wear and tear on the pump I'd guess. Another option is multiple float switches, however its hard to tell from autotopoff.com but it looks like the 2 float switch setup is simply a way to add a range which it'll trigger and not so much used as a failsafe to shut off. So any opinions on the subject?