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Black Sand

Benkidu

Cuttlefish
Registered
Joined
Apr 29, 2021
Messages
17
I am interested in designing my tank to resemble a hydrothermal vent with black sand (Caribsea Hawaiian Black) but I have a couple worries.

People have compained about it being magnetic. My tank is acrylic and I am kind of obsessed about keeping it scratch free.

Also, some people have posted it may have heavy metals (though no one is certain, just based on theorizing between the magnetism and poor coral health).

I'd strongly prefer this black sand but I have a feeling I'll have to use the standard Fiji Pink.
 
Joined
Apr 6, 2021
Messages
25
My first tank had black sand and after years of being setup, when I took it apart I found rust deep in the sand bed and on the bottom glass. No clue what this means or if its safe or not.
 

Benkidu

Cuttlefish
Registered
Joined
Apr 29, 2021
Messages
17
That sounds a little reactive to me. So as much as I'd like black sand I think I'll stick with the tried and tested white options. I'm pretty risk adverse
 

sedna

Architeuthis
Staff member
Moderator
Joined
Jul 13, 2008
Messages
1,509
I don’t have a clue about the chemical composition of black sand- but if it’s left rust in other tanks, that sounds like bad news!
 

pkilian

Vampyroteuthis
Staff member
Moderator
Joined
Jul 31, 2019
Messages
263
Yeah, any type of metal in your octopus tank is a huge no-no, especially copper in any form. Sticking with tried and true methods sounds best to me!
 

Benkidu

Cuttlefish
Registered
Joined
Apr 29, 2021
Messages
17
Ended up going with Ocean Direct sand - if I can't have black at least I have every size of grain.

I love the look of the oolite but I've read its a huge pain and I am extremely obsessive about keeping my acrylic scratch free
 

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