I've used 2 buckets of AF reef salt.
Pros:
I like how it mixes. Consistent numbers each week.
No clumping/hardening
No blue tinge in water
complaints:
mag is 1480 batch claims 1350
Ca is 400 batch claims
I have had issue in both tanks having a diatom algae on my glass and sand.
I have low nutrients and the only change was the salt
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