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Substrate and Stocking help

This is a discussion on Substrate and Stocking help within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Originally Posted by Quantum the black sand blasting media is coal slag, which is mostly silicon dioxide (but not SiO2 quartz as is most ...

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Substrate and Stocking help
Old 09-25-2012, 10:00 AM   #11
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Originally Posted by Quantum View Post
the black sand blasting media is coal slag, which is mostly silicon dioxide (but not SiO2 quartz as is most play sand - same chemically, but with different crystalline structure) and aluminum oxide, it is also some percentage of CaO, which will affect pH (raise it)

also consider that it is used as sand blasting media because of its texture (hard and sharp) so not ideal for any substrate fish

Much depend's on grain size with the blasting media.
20/40 Black diamond blasting media has had no ill effect's on water parameter's,or the eight Melanistius corydora's and hundred's of cherry shrimp in the eight month's I have been using it.
Bristlenose pleco's love to dig it up is my only complaint.
Lot's of folk's using this media with cory's, loaches, but opinion's and real expieriences are two different thing's to me ,so I decided to try it.
Am pleased thus far.
I have fairly hard water from the tap and although this product contain's calcium,iron,magnesium,I have seen no bump in pH or hardness which would not suit the cardinal tetra's and rummy nose who occupy the tank's with this media.(believe the plant's could have,or are,, utilizing the mineral content).
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Old 09-25-2012, 10:35 AM   #12
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I wish I could compare the grain size of pool filter sand to play sand. I think I would prefer pool filter sand because I have heard the grain size of the pool filter sand is slightly larger. The play sand that I currently have in my 10 gallon tank has a very small grain size.

I was hoping I could get pool filter sand at Lowes, but I haven't been able to find any at my Lowes and Walmart does not carry it either. I really don't want to pay an arm and a leg for it at our local pool store, nor do I want to pay shipping for it from Amazon. Might have to take a trip to the big city of Christiansburg; they have more stores than we do and maybe I can find the pool filter sand there!
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Old 09-26-2012, 01:58 PM   #13
I want to switch to sand also but since I am here in the sandhills I will just go into the woods and dig me up 50 pounds. I have been learning up on deep sand beds sounds like something I might like. I know where there is a ridge of pea gravel might as well grab 50 lb of that too.
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