Growstone GS-1

Wondering if anyone has used this for a grow medium? I was researching different options for my upcoming tent build, and I found this stuff interesting because it’s all recycled crushed glass. However, from my understanding the company that makes is went out of business a couple years ago so I’m not quite sure if the stuff currently on the market is new/fresh, or if it’s been sitting in a warehouse somewhere. I’ve read reviews of people getting gnat infestations when they used it, so I’m leaning towards it’s been sitting around in a warehouse somewhere.

Here’s a link to the product on htg supply.

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