I did a PWC
three weeks ago and checked my salt levels with my refractometer, however I was unaware it was calibrated wrong and read 1.025 when the true reading was 1.017. This was the same for about two weeks until I realised I have now got it back up to 1.025 and has been for a couple of days but they still have not come back out. Is there any thing else I can do? They are GSP and others?