that's around what the old pails tested.

My IO salt has been reading:

Mg 1280
Ca 380
dKH 9

Salinity 1.026
Temperature 78 degrees

This latest batch was from the 200G boxes.

My old pails were testing at alk 10-11 dkh, cal around 340 and Mg at 900

Just got a new bucket., not ready to make a batch with it yet, but soon and will test. i had an old bucket of IO, and having a heck of a time with MG/Ca hope the new stuff is more consistent

I call bull crap on this (no part on you though). Manufacturers will claim whatever they want, but the proof is in the bucket. I will believe it when I test the bucket!! I always test at 78 degrees and 1.026 specific gravity, which according to the claims of the manufacturer should put me higher than the numbers you listed. Like I said, I will believe it when I see it! If for some profound reason the manufacturer is actually representing the product honestly (how many snake oils are there out there??) that would be awesome!! :mrgreen: Albeit I would rather have to dose calcium to the mix than have my calcium as high as 440 ppm (or higher with the higher SG). :neutral:

My "old" buckets have always tested around 360-370 ppm calcium, almost always 11 dKH alkalinity, and 1170-1280 Magnesium. Magnesium has always fluctuated significantly, but I have never had it test less than 1170 ppm.

I will get more info from them on how to properly test your salt. Again, its not just test and go. There are certain rules you must follow. On that I will write later on in my blog.

Here is a thread that had been going for a while on RC.
http://reefcentral.com/forums/showth...=Instant+Ocean