Try this on your carbon

[andestang]

Well did a major filter clean out of my Koi filter which of coarse includes changing out the carbon. Did the hot water soak and decided to I didn't need as much as I soaked. So I drained the extra carbon and put it in the lid of the carbon container. Went back later to clean up my mess and noticed this in the carbon (undisturbed) Not just a little rust but lots, even stirred it up to check. And this is just barely a handful. Shows some of the crap that's on the market. Try this on your carbon, I'm curious to see if others find this.

[lastlight]

ROX all the way =)

[andestang]

Yup, just bought some for the first time.

[Northernseacorals]

Here is an excellent article that explains the different kinds of carbon.
http://joejaworski.wordpress.com/200...k-need-carbon/

[abcha0s]

There was a 400 gallon tank about a year ago where rust was found in the carbon. Something about a group buy. The tank was adversely affected by the rust, so perhaps you are lucky.

- Brad

[mws]

Pull it out with a magnet Mike!

[lastlight]

Originally Posted by abcha0s

There was a 400 gallon tank about a year ago where rust was found in the carbon. Something about a group buy. The tank was adversely affected by the rust, so perhaps you are lucky.

- Brad

That was Greg (Snappy, Coralmaster) right here =)

[Funky_Fish14]

Ahh sorry to hear you encountered this issue!

Originally Posted by Northernseacorals

Here is an excellent article that explains the different kinds of carbon.
http://joejaworski.wordpress.com/200...k-need-carbon/

Thanks for linking that, good read!

[Delphinus]

I agree on the ROX 0.8 as well. The only thing I can really say about it is that the smaller pellet sizes means you have to be a little more careful loading and unloading your reactors if you don't want a huge mess, also it seems capable of working its way through sponges so inevitably some will work its way into your sump but as far as a quality of carbon there's no alternative.

That article NorthernSeaCorals linked to just a good job of explaining the issue with organics and outlines why carbon is important even with good skimming.

[daniella3d]

I use the Seachem charbon. It has the shape of little round balls and it is very pure. Last 3 months. It does not do the same thing as your carbon.