Yes there is always a risk that something could be a bad batch, but then it's not just one person being effected, it's more than that and it's hard for a company to hide it and usually they do a recall of the toxic product, especially companies in the USA and Canada.
Here is the recall on Kent carbon that was contaminated:
and beleive me it really did not take long before the story was all over the web, in all forums, everywhere people were talking about it. If you do a search in google for kent contaminated carbon you will find tons of issues and people talking about it.
When I found that the gravel I am using was smelling like varsol I tried to find a single issue with this sand on the web and could not find any. I returned one of the bag at the store and they told me that this gravel always smell like that and the company was contacted and they said it was not toxic, it's the natural smell of the epoxy they use and even though the epoxy is cured, it still can smell depending if it's been manufactured recently or not.
It was smelling so strong than the whole kitchen was smelling like varsol and I rinsed it in lukewarm water, not hot. so sometime just because something smell bad, it does not mean it's toxic. I did a water change yesterday and after 10 days the water still smell a little bit. I guess it will eventually go away. The gravel is white epoxy coated.
This gravel is produced by Hagen. Hagen is a very big company and if there was a problem with some of their product killing fish, they would do something about it. So I beleive it is safe even if it smell strong.
They say it can be used in saltwater aquarium and it is inert. In a saltwater aquarium it does not take long for everything to die if there is anything toxic. Corals are super sensitive to dangerous chimical. With kent carbon many of my corals died in only a few hours so it this gravel would be toxic we would hear about horror stories like we did from Kent carbon and there would be a recall from the company.
Originally Posted by WhitneyLin
Theres always a chance of someone getting a defective one. Theres bound to be bad batches out there. It happens. But I still appreciate the warning all the same.
Besides, even if it is in no way harmful, im still paying good money for this stuff. Paint chipped/bubbling decor does not make a nice looking tank. I dont want to waste my money on something thats going to have a problem and its normally too late to return it.