We try to keep our parameters as close as possible to the following:

SG - 1.025
Mg - 1300ppm
Ca - 450ppm
Alk - 9.0-10.0dKh
Nitrates - < 4ppm
Temp - 78.4 – 79.4°F (winter) and 79.2 – 80.1°F (summer)