hello guys, I need help I tried mixing the salt and water but my refractometer is reading high 1.028 vs the instant ocean hydrometer between 1.025 and 1.026. I got both just to make sure the salinity is close to one another. Yes I am paranoid! I calibrated the refractometer with RO water but I order some calibration fluid. I'm getting frustrated because I want both to be the same or alteast close to one another. Also I drove almost three hours away to a fish store and they had live rock in a container with light but no filtration, can it survive without filtration? I'm keeping my options open when getting live rock. I'm just ready to start but I can't get the salinity levels. Thanks for your help