for the last year i`ve been using a coralife deep 6 hydrometer and i always measured my salinity at 1024, the other day i purchase a instant ocean hydrometer (saw it on sale) and tested it and the reading was 1026. so now i got 2 diff readings with 2 diff hydrometers. now i dont know witch one to trust, anybody know why this is ? any imput is appreciated. thx in advance



