Playsand Problem ?

[boabmac63]

Had play sand in my tank for a while now and its like under the first layer of sand its like black at sum bits what is this is it okay

 

[onidrase]

It's like that in my tank too, none of my fish are bothered by it, so I'm not either.

 

[boabmac63]

It's like that in my tank too, none of my fish are bothered by it, so I'm not either.

Cheers just checking

 

[phoenixgsd]

i stir mine every now and then, apparently it helps to help prevent this

 

[fishprotector]

Just needs a good stir. I used to stir mine every week or two. I have since changed to limpopo and it is much better though. I would not go back to playsand.

 

[dbanner]

I just ordered 25kgs of black Limpopo sand. Changing my current play sand as its too dense and makes the fish look faint in colour

 

[CezzaXV]

It's bacteria that grow when there isn't any oxygen getting to the lower levels of the substrate. I found some under my coconut caves when I rescaped recently. I dont think it does any harm, it just looks unsightly.