I mix mine in an old Instant Ocean 5 gal bucket w/ a powerhead for a while.......Then I use
rigid airline tubing and flexible tubing to make a siphon run drip container, controlled by a small valve to adjust the drip. I got the idea from ' the talking reef podcast ' where he uses a 1 gal container.... I just used a 5 gal instead. It adds about a drop a second, which is perfect for my evaporation rates.....
From what I understand about it, RO has a saturation point w/ kalk and it will only absorb so much....the excess is what settles. I keep my rigid tubing about an inch or two off the bottom of the bucket to avoid the concentrated lower layer.