the carbon just stops absorbing, any small amounts of toxins it releases are
already in your water anyway.
Aqua wrote:
This brilliant concept imho may soon result in influx of all the toxins it
now holds right into the aquarium water, and your fish will suffer from
severe toxication.
The current carbon in my tank internal filter is little more than one year
old. There is absolutely no casualty due to so called "toxins".
--
Thank You
Dominic
http://www.dlink.org/aqua