black sand for reef

Hello. I am currently in the process of setting up a Red Sea Max S 650 to upgrade from my 75g. I want to use the Hawaiian black sand because I like the way it looks in my 20g. My question is: Do certain type of fish have a problem with the black sand? Current livestock that will be transferred...

Hello, I bought a bag of caribsea black sand Hawaiian for my nano project and I wanted to show you what it look like, I haven't seen anyone making a comparison like this so I hope this will give you an idea. I'm currently waiting for a ICP test and once I receive it I will publish the results...