N nycsicktank Advanced Reefer Location Queens, Nyc Rating - 100% 2 0 0 Nov 22, 2007 #1 i get two different readings. one is over 400-500ppm and the other one is 1ppm. what should i do?
cb747 How many is too many? Manhattan Reefs Location Long Island - Nassau County Rating - 100% 38 0 0 Nov 22, 2007 #2 Recalibrate your TDS meter.
Tonyscoots84 REEF ON! Manhattan Reefs Location Howell, NJ Rating - 100% 64 0 0 Nov 22, 2007 #3 get a source of water that u know for sure that is 0 tds and as CB said recalibrate em both