Which ATO did you get? That’s on my list for the future.I just got my tank yesterday and am getting it setup now. How high to do have your water level? First time using an ATO so trying to get everything figured out.
The instructions said to put enough water in for it go through the overflow and as soon as I turned the pumps on the level in the DT went up and down in the sump. I am cycling without anything in the chambers so it sounded a bit like a waterfall so I added a little more water. Once I add my filter floss I should be able to have more flexibility for that.