My nitrite level was <0.25 mg/L, and my nitrate levels were also very low. I did a roughly 30% water change replaced it with the heated fresh water from the bucket, adding the snail that was in the bucket at the same time. I had put my old heater in the bucket, so the temperature wasn't too different. I am hoping by adding the fresh water, I have lowered the SG a little to make it more manageable for the snail. Will try to bring it back up over the next few days.
The annoying thing about this picture is that there is a patch of brown slime algae directly in front of the snail making it impossible to take a non-blurry photo. Hopefully the snail eats that first!