Is this safe for aquarium use?

hi all

I found this ad on gumtree

I have Red quartz dune sand, 100% natural and soft enough for any lizard. gecko. snake etc. works well for animals that dig to lay their eggs, non toxic and filtered to make sure even if some is digested with the animals food it will pass with no harm.

I just wanted to know if this is safe for aquarium use?

thanks

 

No clue ... at R80 for 10kg that could be a nice substrate for a planted tank?

Get a bag ... dump it in a bucket, leave it in the sun if you get stuff living in it and growing in it over a few weeks - give it a bash.

But also look here and let us know the results Is this rock acceptable for aquariun use

 

Sounds like it should have a lot of iron in it. Plants ought to grow well.

 

As the name suggest its only inert quartz.

 

@mattie, if it is inert, does it mean it can be used?

 

I would go for it

 

thanks, will see how it goes

 

Kalahari sand is mostly quartz grains which are perfect for aquariums. They also have some feldspar, again not a problem. The iron hydroxides oxide (red stuff) is insoluble and OK for an aquarium, iron is only soluble at very low pH. But remember that some things can be in the water that shouldn't be there. If you have a pH drop or an ammonia spike they could react, but by that stage they would be the least of your worries. But they won't react in normal water.