Thoughts on black sand

[Skimmer Juice]

Personally wold skip it Im not sure if it still contains metal particles . Have heard it does so I always take the risk out and not roll the dice . Although I have used it for a set up early in my reefing journey , before knowing it had or could have metal in the sand . Noticed no deaths while using it had a mantis shrimp in the aquarium , for about 6 months until I moved the shrimp to a larger aquarium . As for now I skipped it when thinking of doing my blue spot jawfish sandbed in black, just to remove that anything that might or could happen risk out for my beloved fish friends