fertilizer-nutrients What happened to my Masterblend?

[wiicek]

I just opened my Masterblend bag and this is what I saw inside

It has never cristalized like that before, I don't know what happened. Maybe it got a little bit of water inside the last time I was using it? I don't know.

It does not dissolve easily now but it does with time.

Here is the picture of the thingy...

Can you help me with this? Do you know anything about that? Is it safe, I guess, did it loose quality or something?

 

[PurpPepp]

It absorbed atmospheric moisture. Melt it in hot water. It should not take more than a gallon of near boiling water.

You can try to pulverize it, but that would be a lot of work and a big mess.

 

[wiicek]

Thank you for answering, I used it once and didn't see any damage to the plants I used it on. I wasn't sure something didn't went into it and... chemistry.
Thanks!