boaster or go di only. I got 4 stage but i bypass RO as i feels it is expensive to maintain in long term. Using Di i still able to achieve zero reading.cheers
Check your salt batch lot number. If they are similar batch as the ones you used previously. My advise would be verify your curret refracrometer with another.i got a feel is your equipmet error
I would like to knw too. Mine went out of range by 4 -5 degree c after 3 months of usage. Was so happy to note that my temp was around 21 degree then realised its out of order. I tried the reset button but fruitless