Coal slag vs iron silicate - The Planted Tank Forum
 2Likes
  • 1 Post By jeffkrol
  • 1 Post By Termitehunter
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 10-31-2019, 08:56 PM Thread Starter
Planted Member
 
PTrader: (0/0%)
Join Date: Sep 2014
Location: Newfoundland Canada
Posts: 216
Coal slag vs iron silicate

Hello I am going ti go blasting sand. I am in Canada so no Tractor Supply store. I have noticed people using the 20 40 blasting sand coal slag. I have found only 20 40 black iron silicate where I live. Is this appropriate ? I am thinking it's ok. It is deep black which I like the look of. Thanks
megatrev62 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 11-01-2019, 11:02 AM
Wannabe Guru
 
minorhero's Avatar
 
PTrader: (0/0%)
Join Date: Mar 2019
Location: Maryland
Posts: 1,509
Quote:
Originally Posted by megatrev62 View Post
Hello I am going ti go blasting sand. I am in Canada so no Tractor Supply store. I have noticed people using the 20 40 blasting sand coal slag. I have found only 20 40 black iron silicate where I live. Is this appropriate ? I am thinking it's ok. It is deep black which I like the look of. Thanks
I haven't used it, and a google search turned up no one else that said they were using it. I did find this page:

https://www.us-minerals.com/us-miner...iron-silicate/

Which noted that it is chemically inert which is good for us. I would be highly tempted to try it if it were me. If you do try it then you will want to check water parameters pretty carefully against a control sample for at least a week. And let us know what happens.
minorhero is online now  
post #3 of 9 (permalink) Old 11-01-2019, 11:05 AM
Planted Tank Enthusiast
 
PTrader: (3/100%)
Join Date: May 2015
Location: Western Montana
Posts: 850
do you have petco there? pretty sure petco black sand might be the same thing as bdbs.

MTS? no,I just need one more tank...
MtAnimals is offline  
 
post #4 of 9 (permalink) Old 11-01-2019, 05:22 PM
Planted Tank Guru
 
PTrader: (0/0%)
Join Date: Jun 2013
Location: WI
Posts: 11,680
Quote:
Originally Posted by megatrev62 View Post
Hello I am going ti go blasting sand. I am in Canada so no Tractor Supply store. I have noticed people using the 20 40 blasting sand coal slag. I have found only 20 40 black iron silicate where I live. Is this appropriate ? I am thinking it's ok. It is deep black which I like the look of. Thanks

There have been reports w/ even "branded" products of too many heavy metals in some slags.
Not common but something to be aware of..
Discusluv likes this.

"A man with a watch knows what time it is. A man with two watches is never sure."
jeffkrol is online now  
post #5 of 9 (permalink) Old 11-02-2019, 03:39 AM
Planted Member
 
Newbie Tankard's Avatar
 
PTrader: (2/100%)
Join Date: Dec 2018
Posts: 171
The coal slag and the iron silicate should be the same thing, just different names. The link posted above goes to us minerals which makes the coal slag and talks about the iron silicate, which is the same thing. I use it in my 3 tanks and have healthy plants and fish and no complaints what so ever. Just be sure to rinse very very thoroughly, i sprayed mine in a tub with a jet setting on a garden hose sprayer and probably rinsed it about 8 times, basically until you notice no notable difference in a rinse. Other than that I love the color, the ease of use, availability, and the price.

Cordially,

Newbie Tankard
Newbie Tankard is offline  
post #6 of 9 (permalink) Old 11-02-2019, 09:53 PM
Banned
 
PTrader: (0/0%)
Join Date: Jun 2017
Posts: 1,300
Iron silicate is copper slag from copper smelters. Coal slag comes from coal power plants. Black diamond is the brand often listed and they sell both. According to the SDS sheets these products have the following minerals in them:

Coal Slag:https://www.blackdiamondabrasives.co...ds-rev-5-2.pdf


Copper slag(they apparently have 2 sources for this with slightly different element mix):
http://https://www.blackdiamondabras...2-3-update.pdf

https://www.blackdiamondabrasives.com/media/1329/iron-silicate-harvey-galveston-sds-rev-0.pdf

The vast majority of these produces oxides of iron, aluminum, calcium fused together in a silicon dioxide glass. Like all natural substrates they will have small amount (less than 1%) of other elements including heavy metals. However since most of the material is a fused oxide ceramic any heavy metals are trapped and will not leach out in to the water. Note that tap water will also have small levels of heavy metals in it.

It looks like all are black based on the web site. and all should be inert.
Surf is offline  
post #7 of 9 (permalink) Old 11-03-2019, 02:05 PM Thread Starter
Planted Member
 
PTrader: (0/0%)
Join Date: Sep 2014
Location: Newfoundland Canada
Posts: 216
Thank you for all input. I picked up a few bags and rinsed it well. There was no debris floating during the rinsing. It seems quite heavy and is holding plants down nicely. I have no test kits and haven't used any in a long time. I will pick up a pH kit and keep an eye on in in coming weeks. The sand is very uniform and a nice deep black in the tank. I am using it alone with diy root tabs. If anything runs amuck I will report it here. Thanks again.
megatrev62 is offline  
post #8 of 9 (permalink) Old 11-07-2019, 11:02 AM
Newbie
 
Termitehunter's Avatar
 
PTrader: (0/0%)
Join Date: Oct 2019
Location: San Antonio, TX
Posts: 1
Great post.
I just used Black Diamond blasting media for the first time with my new 125 set up. I'm currently going through a fish less cycle.
I was reluctant to use coal slag in the beginning. But saving $100 was just too tempting to not give it a try.
My concerns were leaching metals, oils, residues killing off BB etc. I have to say that it has not affected my perimeters at all. PH, KH are all consistent with the initial water put in the tank.
I'm 11 days into my cycle now and are seeing really good nitrite levels as the ammonia drops.

If I were going to have issues with it, I'm sure I would see it by now.
Leeatl likes this.
Termitehunter is offline  
post #9 of 9 (permalink) Old 11-08-2019, 12:01 AM
Planted Tank Enthusiast
 
Leeatl's Avatar
 
PTrader: (1/100%)
Join Date: Aug 2015
Location: Woodstock,Georgia
Posts: 865
I think it has been proven over and over again that BDBS is ok for our use , and as inert as any substrate can be....lol

My wife says if I get one more aquarium she is going to leave me . I sure am going to miss her fried chicken .
Leeatl is offline  
Reply

Tags
None

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome