There is someone selling substrates on ebay for really good prices. A 20lb bag at my lfs is 23bucks for black sand. What do you all think about this??? http://cgi.ebay.com/120-lbs-Black-A...5|66:2|65:12|39:1|240:1318|301:1|293:1|294:50
Saltwater Ok = Yes
Origin = California
a bit larger grade and sharper (less round) than i expected, but it is black!!
WOW..I was going to bid one time on the Black sand!! good thing I didnt..good Info!CHOMPERS;2844837;2844837 said:There have been people that have had the dye leach out of their sand and gravel up to the point that it was turning white. The problem that I see is this:
I'll talk about the SW part later. Talk to several of the California people about native black sand or the lack of it. I have only been to Southern California and there wasn't any black sand anywhere. To get natural black sand (that hasn't been dyed), it is my understanding that it has to come from Hawaii. I could be wrong so check with the Cali folks. It comes from volcanic activity, typically from volcanic islands.
Secondly, it can come from coke or iron production (slag). I haven't looked into it, but it is said to not be ideal for fish tanks (makes sense).
I also avoid ebay and craigslist listings that have the word 'WOW' in the title. The seller is either an idiot or is playing the buyer for an idiot (usually both). In such listings, you usually find claims that aren't true. The only substrate to have in a SW tank is crushed coral (down to sand sized grains). There isn't a naturally occuring black coral source, especially in California so this stuff isn't suitable for SW. The substrate in a SW tank does much of the biological filtration and you wouldn't want the pores filled with dye.
CHOMPERS;2844868; said:I think it is iron slag that has been milled. It is used for sandblasting. Check a welding/sand blasting website to compare prices.