Here are the basics:
45g tank, by himself
Immediately did water check, all seems normal for him, except the Nitrate and salinity a little low:
pH: 8.2
Ammonia: <0.25ppm
Nitrite:0ppm
Nitrate: 10ppm (I thought this was usually closer to 5 or less normally)
Salinity: 1.0215
(Edited to add, he is about 6 years old and has been in this tank for about 2 years)
So, we used the same critter sitter as usual. He was fed (a worm) every other day, still is nice and round, belly white, head bright...any ideas? Is the Nitrate the culprit?
Doing water change and adding a little saline NOW.
Thank you in advance!