Hi everyone. I have a quick question. I run Seachem Purigen in my filters. I know that there is some speculation that carbon can cause HTH disease in Oscars though not proven. I know Purigen is not Carbon but it performs allot of the same functions. So my question, do you folks feel that the Purigen could pose any risk to the Oscars? The theory is that the carbon removes some elimates in the water the oscars may need for health? (again this is not proven). Then the last question is Purigen is not really Carbon but performs many of the same functions that carbon does plus some? Any Risk you think?