Ive been using AC pumps for so long, im not sure if this is even a thing. My ATO chamber is in an area where pouring water from 5g jugs just isn't feasible. Rather than keeping a small pump in the jug, I'd rather just have it in the ATO chamber and suck the water in when it comes time to refill.
Is this a thing? Or is a small pump in the jug the only way to go?
Is this a thing? Or is a small pump in the jug the only way to go?

