Temp is ok, I have my chiller on a temp controller which has it's own temp probe and I also keep a glass thermometer in the tank. On the SG, I thought of that tonight. I use a refractometer that I calibrated when I got it like 2 years ago so that could be off. I can't seem to find my cheapy plastic hydrometer to get a basic cross check on it so I'm not sure. I know shrimp are more sensitive to SG changes so I need to check it somehow.