JBJ auto top off

[Melina]

I was thinking of getting one of these but I'm not sure how I'm going to hook it up to my tank. I'm a total newbie here. I was told it needs to be directly connected to my RO/DI unit, but my tank is like 15 meters away from the nearest sink and I don't want a hose lying across the floor. Can anyone suggest to me a way to do auto top off without having a direct line to my RO/DI? I thought I could use a bucket of fresh RO/DI beside the sump? I guess I'd need a pump? I suck so bad at technical stuff like this! Eventually I'd like to do auto top off with kalkwasser when my calcium demands are higher but I have no idea how to set this up...