anyone using this carbon in their tanks

[olemos]

Wonder if anyone has used this carbon in there tanks and what do you think?
http://cgi.ebay.com/27-Lbs-5Gal-Pre...1QQihZ008QQcategoryZ20756QQrdZ1QQcmdZViewItem

 

[clutch]

i do

 

[olemos]

Have you had any phosphate problems ?
Looks like a good deal If it doesn't leach any phosphates .

 

[crumbletop]

"NOT Acid Washed"... "higher ash content"...

I'm no expert but you can likely expect pH swings (could be large pH swings) and leaching phosphate from use of this carbon. A quote from http://www.articlefishtalk.com/Article/Activated-Carbon-in-the-Aquarium/78

Acid-washed carbons will leach less phosphate than others and are usually more expensive, since they have had much of their ash and phosphate washed out. Ash is important because it is responsible for "pH shock". Some carbons can increase pH to over 10 in a very short time. An acid-washed carbon will barely increase pH to 7 over several days. Carbons that do not alter pH are usually the same carbons that will not leach much phosphate.

Don't know if that's true, but I have heard acid-washed is the way to go.

 

[clutch]

haven't noticed a ph swing or phosphate problem. Clean water thou =