[firefiend]

So I was at a pool supply shop to get some silica sand (that they had when I called earlier in the week) only to find out that they don't carry it. But the lady did tell me she had Vitro which was supposedly a huge improvement over sand (for filters).

When I told her it for an aquarium she said it works great for aquariums too and she said it was even prettier than sand because it sparkles.

Well, I don't care about the sparkling because I don't want my tanks to look like something out of Twilight.

However, I said it sounded interesting so she gave me a little baggie full (enough for pico, haha) and a VitroClean brochure.

Has anyone ever used this stuff... the brochure does advertise aquarium use which I really liked... I bet it will be a great filter media though it doesn't have the look I want for a soil cap.

 

[PinoyBoy]

lighter weight, and highly angular crushed

Have you tried it yet? I'm afraid that it might float and might be too sharp for some inhabitants. No, I have no experience with it; just basing it on what I've read.

 

[jasonpatterson]

It's crushed glass, so I'm doubting that it's going to float once it's been wetted, but as far as sharpness goes, that would definitely be a concern for me.

 

[firefiend]

I haven't used this yet. The sample amount i have would probably be better tested as filter media than substrate but I have been rubbing it palms and between my fingers and haven't come across any sharp bits.

 

[Hoppy]

You could use a powered rock tumbler to round off the sharp corners. Then you would basically have silica sand. I haven't seen any of this, let alone using it, so it may be OK as is.