Can this be used in an aquarium ?

I used this before in an aquarium and it worked VERY well. I used it in a 20-gallon long (used maybe 1/3 of a bag) and had great success. I then upgraded to a 40-gallon breeder and, after putting down a layer of Miracle Gro Organic Mix, put this on top and it was even better! Only things I would advise you about though are to make sure that you rinse it extensively before you use it. It will take quite some time to settle anyways. Also, it may create an oily film on top of your water. To fix this, I just skimmed the top with a net and did a couple water changes (after the sand had all settled to the bottom).

Hi, can you use fine coal slag on aluminum?

As mentioned by the seller, it depends on what you are trying to accomplish and how your equipment is set up. At low pressure with a big nozzle it might suit you. It is an aggressive media and can easily eat up aluminum and other soft metals. It would provide excellent "tooth" for painting if you use it carefully.

what grit is the media ?

The black diamond media will be a 30-60 fine grit.

Black Diamond Blasting Abrasive Misc

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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HK$1529

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Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Specifications

ASIN	B0000AXAUQ
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#340,958 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #113 in Sand Blaster Accessories, Parts & Media
Customer Reviews	4.1 4.1 out of 5 stars (80)
Date First Available	February 23, 2011
Grit Description	Fine
Grit Rating	60
Is Discontinued By Manufacturer	No
Item Weight	50 pounds
Manufacturer	Northern Tool and Equipment
Material	Diamond
Package Dimensions	20 x 12 x 4 inches
Part Number	FN5

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Black Diamond Blasting Abrasive [Misc.]

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