I agree on the LFS sg issue. I had a conversation at one recently, first reply to sg was 'I don't know". I got them to measure it for it me. They used the floating dial in a box method, it was 1.015. I have a feeling there is a lot of variability. I have wondered about this when ordering online as they often report a sg, but is it real. I cannot mix saltwater once they arrive so I do really long acclimations with the difficulty of the temp in the acclimation container dropping to room temp. I have been looking a small heater for a 5 gal bucket but the water volumes are so low I am not sure it works. It is frustrating. Also, make sure you are using RO/DI water. There are a lot of things in city and well water.