Morning after, the salt is mixed but the water is a bit cloudy. I think some Ca precipitated from adding the mix too fast. I'm waiting for it to clear before I add sand, then rock.
No leaks, no problems, except ...
I've realized my 100PX-X is too big. My overflow can handle it, but it just moves too much water through it, causing a lot of gushing sound (not gurgling ... that's controlled by my downpipe valve). I also don't feel comfortable with that much flow through the sump. And lastly, the 100PX-X is significantly more noisy then the 50PX-X. So, I've decided to change pumps. I think I'm either going with another Eheim 1262 (may not be enough flow ... we'll see) or pony up and get the smallest Red Dragon pump. 8O