When they tell you their salinity is thus or so. I'm sure you guys never do this but this newbie picking up his first fish did. I had my refractometer in the truck and instead took their word. When I got home one bag was 1.032! The other was 1.027, not so bad. I thought maybe my refractometer had lost calibration but I checked it with the standard and it was spot on. The guy in the 1.027 bag is safely in QT hiding at the bottom of the tank. The other poor guy is still in acclimation. Hope he does ok! Has this ever happened to you? What would you do if that had been a shipped fish instead of one that had only been in the bag 40 minutes when it was opened?
When ever I got fish flown in to the store the salinity was all over the place. I've been asked many times to check the salinity of a tank before someone bought a fish etc... it only takes a few seconds so I never minded. I bet your store will do the same.
