I may need to switch salt.
I have used standard Instant Ocean for MANY years.
I supplement it with Magnesium, but otherwise it works great.
And they have a cheap 200G box, that has nice separate 50G bags.
But they changed the bags. The plastic is now more cellophane like.
It seems stronger for shipping, but it does not block moisture well.
So now may bags are starting to solidify.
Not good!
Probably go to Red Sea Blue bucket. I have used it before. Good salt.
They have nicely sized 55G buckets.
I am not really a big fan of the "premium" salts.
They tend to push the Alk/Ca too high, which can precipitate, or worse, add organics.
Since I run an auto-water-exchange, my mixed salt sits there for months.