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CaptainNemo · 09-03-2008, 01:28 PM

Back to the blasting grit for a second. First off, I'd never even thought about putting that in my tank. I once saw what blasting grit did to the faces of some cichlids that liked to sift through it, and that sealed it that I'd never put it in my tanks.

However...
Today I was at Tractor Supply and it just happened that someone had spilled some at the checkout and it looked pretty good. I got to thinking. So here's an idea:

I have an electric cement mixer. Could I tumble blasting grit with some granite cobbles or something to round the sharp edges? Is this practical, and how long would anyone guess it would take? Is there anything chemically this stuff does to my water that I don't want? Any ideas on how to tell when it's not sharp anymore, short of buying some test corys and seeing if their barbels get worn off?

Like I said, this got me thinking...

09-03-2008, 01:28 PM	#28 (permalink)
CaptainNemo Member Join Date: Jul 2008 Posts: 38 iTrader Ratings: 2 iTrader Positive Rating: 100% Plant Points: 2500	Re: Alternative Black Substrate? Back to the blasting grit for a second. First off, I'd never even thought about putting that in my tank. I once saw what blasting grit did to the faces of some cichlids that liked to sift through it, and that sealed it that I'd never put it in my tanks. However... Today I was at Tractor Supply and it just happened that someone had spilled some at the checkout and it looked pretty good. I got to thinking. So here's an idea: I have an electric cement mixer. Could I tumble blasting grit with some granite cobbles or something to round the sharp edges? Is this practical, and how long would anyone guess it would take? Is there anything chemically this stuff does to my water that I don't want? Any ideas on how to tell when it's not sharp anymore, short of buying some test corys and seeing if their barbels get worn off? Like I said, this got me thinking...