Black Diamond Substrate - Page 3 - The Planted Tank Forum
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post #31 of 38 (permalink) Old 11-10-2020, 09:29 PM
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A different substrate (i.e. something made specifically for aquarium use) would likely be much less sharp because of the purpose of the product. IME, you pay more for something like CaribSea's Super Natural Crystal River sand for the uniformity of the product and the smoothness of it. I believe 100% that using the CaribSea stuff would not have damaged the barbels on the cories. I can't say that about BDBS, but as we have already seen, YMMV.
Only one way to know for sure and avoid conjecture.

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post #32 of 38 (permalink) Old 11-11-2020, 08:45 PM
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The only way you know for sure is to do a scientific study with a control group. One of the big issues is this is all anecdotal. Just because you have a tank with BDBS and don't have any issues that doesn't mean that it can't cause problems. Likewise, if you're having problems that doesn't mean the BDBS is causing it.
If you think that spending more on a product made specifically for the aquarium is a safeguard you need to read up on Caribsea's Tahitian Moonsand. They killed lots of livestock with that stuff.
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post #33 of 38 (permalink) Old 11-11-2020, 09:01 PM
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The problem I found with Black Diamond Black Sand is it can be very difficult to tell what you are actually getting. I ordered the "coarse" from Tractor Supply and they sent me bags of what appear to be fine dust and not what people show in their tanks. While the bag itself had checkboxes for checking the grit/nozzle size, none of them were checked, so Black Diamond itself does not bother writing or indicating on their bags what grit their product is. I took them back and they said that is the only bag made now, that they used to have red and black but just one of them now. It was confusing and you'll notice in a lot of posts people complain of weeks of clouding after using Black Diamond probably due to getting the wrong grit. I decided not to take a chance and went with Seachem Black Sand and have not looked back. Despite the $150, I like the peace of mind of knowing what I got. I'm glad some folks figured it out and got it to work for them, but not worth the risk IMO.
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post #34 of 38 (permalink) Old 11-11-2020, 09:19 PM Thread Starter
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I think it is whatever works for you and whatever you are comfortable with. We all try different things and what may work for one person may be a disaster for someone else. I'm going to post another post for the activ-flora I went with FYI: My Black Diamond had a check mark under two different grades and both were faded. Don't think it was fine, but didn't matter in the long run. Thanks for all the feedback.
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post #35 of 38 (permalink) Old 11-12-2020, 01:41 PM
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Only one way to know for sure and avoid conjecture.
Like I said, YMMV. All I can speak to is my own experience with the substrate I used. I know I would never use it again if I decided to get more cories or other bottom-dwelling fish. Main reason being that cost is not so much of a factor as it used to be back then, especially given the size of my current tanks (10g and 45g).
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post #36 of 38 (permalink) Old 11-12-2020, 03:59 PM
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Like I said, YMMV. All I can speak to is my own experience with the substrate I used. I know I would never use it again if I decided to get more cories or other bottom-dwelling fish. Main reason being that cost is not so much of a factor as it used to be back then, especially given the size of my current tanks (10g and 45g).
One of my smaller tanks has the Caribsea super naturals sand and I really like it. It's very soft and fine. Cories would probably love it.

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post #37 of 38 (permalink) Old 11-13-2020, 02:27 PM
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...

If you had your heart set on black sand, you can see if Petco's offering would work for you: https://www.petco.com/shop/en/petcos...isting_Ads-_-0
I'm using this stuff in my little nano and a grow out tank and it's growing crypts beautifully. The grain size is perfect. Crypt Parva in my nano. Look Ma no root tabs.



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post #38 of 38 (permalink) Old 11-14-2020, 07:10 PM
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Has anyone ever had metal bits in this? I opened my first bag, took a magnet to it and there are very tiny metal pellets coming out of it. Does that mean this bag isn't safe to use, or I just sit here for hours taking the metal out with a magnet? The picture is a paper towel with the bits picked up with a magnet in the first cup out of the bag. The 2nd pic is a magnet up close with the pieces which were sifted through twice and still magnetized. Thank you
There is similar black blasting sand containing about 30% iron, it is the byproduct from copper smelting.

Make sure it is the diamond blasting sand, it is Silicon carbide(SiC), and make from different process.


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Last edited by Bettatail; 11-14-2020 at 07:21 PM. Reason: Add
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