"Hi mate, that looks like cal mag to me! Shes looking a little dark so maybe cut the N a little. Dont forget cal mag contains N so take that into account when mixing your nutes"
@InspireMe
Calmag doesn't necessarily contain nitrogen, sometimes it also contains other things (iron for instance), depends on what you're using.
Strictly, calmag is only calcium and magnesium, though. And then, the ratios of supplements often differ, too but are typically biased towards magnesium (relative to natural abundance and soils). And I find people most often have calcium deficiency issues, more so than magnesium, along with nitro excesses.