So I have this one too and have been using it daily for months. With my water pressure, it takes 30 minutes per gallon. Depending on my needs, I'm either filling one gallon jugs or 2.5 gallon buckets. I set a timer. It's set up in my laundry room sink, and I just keep it setup. The waste water output just goes down the drain and I have the output RO pointed into either bucket or jug.no float valves, very low tech, works great for my needs. I did forget to set timer once, went to work, and forgot. Luckily, I have jug I'm filling placed IN sink so even if overflows, I waste water, but it just goes down drain and doesn't flood laundry room.