That's what I said Christy 
I get the same readings from Salifert and Hagen. My Bucket of IO measures 320ppm calcium when mixed over night. Going to try Crystal sea next time. I talked to Robert @ Crystal sea and he said you can change your salts but do so slowly. I going to try smaller more frequent changes if I like the readings, probably 5 gallons /week instead of 10 every 2 weeks. Not very impressed with IO's readings.
__________________
Marty
50g reef, bubble king skimmer,20g sump,zeovit system, PM cal reactor
|