Instant Ocean reef crystals

[Skimmer Juice]

Have been using reef crystals for 10+ on my reef tank , its great salt calcium mixes close to 500 , so a bit high , and my only gripe is the brown film it leaves in my mixing barrel . Have never used regular instant ocean . But I did use seachem for a bit as I could not find reef crystals and ended up going back to reef crystals and pay $10 a bucket more .