test kits

[straightrazorguy]

I'm using Instant Ocean salt and testing Mg with a Red Sea kit. I always get mag readings above 1550,a nd I never add any Mg. Anyone else have that experience?

[Reeferluke]

I use IO salt this bucket mixes at 1190 mag 390 cal and 9 Dkh I test with all sailfert test kits. But I find IO salt can be all over the place. What the rest of your Params like?