Which dark sand substrate for cories (and plants)? - The Planted Tank Forum
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post #1 of 9 (permalink) Old 08-19-2018, 01:23 PM Thread Starter
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Which dark sand substrate for cories (and plants)?

Hello all,

I'm looking for a dark sand substrate that would work for plants but also be cory safe. I've used flourite, flourite black, and onyx sand in the past but haven't kept cories on them.

If there is a substrate that is also good for plants, that would be great. If the only options are inert sands, I can always augment the substrate with root tabs. I know many people use BDBS, but I was concerned that it would be too rough for cories.

Thank you for your time and help!
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post #2 of 9 (permalink) Old 08-22-2018, 01:42 AM
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My corycat has been on BDBS for almost 3 years now, no problems so far



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post #3 of 9 (permalink) Old 08-22-2018, 11:12 AM Thread Starter
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Thank you! I'm hoping to find some BDBS locally.
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post #4 of 9 (permalink) Old 08-22-2018, 01:22 PM
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Thank you! I'm hoping to find some BDBS locally.
If you have a Tractor Supply Company they sell 50lb bags. I use medium grit.
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post #5 of 9 (permalink) Old 08-22-2018, 03:04 PM
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It's a bit pricier, but we've had excellent luck with both our plants and our Cories with Controsoil. Ultum Nature Systems has brought it back and it's available for sale in a few places. We went with the extra fine (1mm grain size) and are very happy with it.
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post #6 of 9 (permalink) Old 08-22-2018, 04:16 PM
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If you can't find anything fine enough, I'd imagine you could use plant-friendly substrates on the bottom and top off with dark play-sand. Of course they're probably affected by this more, but my pygmy corys seem happier with play sand than they were with rougher river sand.
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post #7 of 9 (permalink) Old 08-22-2018, 06:17 PM
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My cories enjoy the BDBS as well and so do the plants

20 Long planted
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post #8 of 9 (permalink) Old 08-22-2018, 08:34 PM Thread Starter
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It's a bit pricier, but we've had excellent luck with both our plants and our Cories with Controsoil. Ultum Nature Systems has brought it back and it's available for sale in a few places. We went with the extra fine (1mm grain size) and are very happy with it.
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If you have a Tractor Supply Company they sell 50lb bags. I use medium grit.
Thanks guys! Of our two local TSC stores, one said that they had it in stock on their website... I went there and they were sold out. I'm going to try again this weekend, but call first. I'm guessing their inventory system online isn't as accurate as it should be.

Brothermichigan- Is the controsoil a clay-like substrate or sand? Will it break down over time and have to be replaced?

Thelongsnail- If I could find some really dark brown playsand, that would work. I just want to avoid the standard sandy color I've usually seen it in.
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post #9 of 9 (permalink) Old 08-22-2018, 10:09 PM
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Thanks guys! Of our two local TSC stores, one said that they had it in stock on their website... I went there and they were sold out. I'm going to try again this weekend, but call first. I'm guessing their inventory system online isn't as accurate as it should be.

Brothermichigan- Is the controsoil a clay-like substrate or sand? Will it break down over time and have to be replaced?

Thelongsnail- If I could find some really dark brown playsand, that would work. I just want to avoid the standard sandy color I've usually seen it in.
It's clay-like, and as far as I know, it doesn't break down. We've had it in one of our tanks for a little over a year and there's no sign of it falling apart. It does leach a bit of ammonia at first.
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