Another update:
One of the maxi mini nems is not doing very well. I have been trying to nurse it back, we will see what happens. At least for the moment it doesn't seem to be getting any worse. Hopefully it will recover.
I got 2 sexy shrimp in the tank and they seem to be rather fond of the sick nem. Maybe they will help to revive it.
I also got another Maxi Mini nem, that makes 4 so far. Thinga are doing really well at the moment. I got my ATO installed, I ended up ording one from Autotopoff.com. It works great!
I tested my water today and this is what I found:
SG = 1.025
Temp = 76.8
Nitrates = 5ppm
Nitrites = 0 (undetectable)
Ammonia = 0 (undetectable)
Phosphates = 0 (undetectable)
Calcium = 560
dKh = 8
My calcium is a little high and my dKh a little low. I dosed a small amount of dKh buffer to balance things out. I will re-test in a couple of hours and see where things are at again.
Here are some new pics: