Using carbon filtration in freshwater aquariums has become one of the hot trends nowadays. However, it’s at the same time a heated controversy. As a spectator, I want to cleat that carbon use is optional and it’s always a personal choice. I have tanks that use carbon and those that don’t. This article is my experience that provides some details about the use of carbon, which may allow aquarists like you to decide if carbon filtration is worth trying or not. Compared to carbon-zero tanks, I realized that carbon removes dissolved organics and toxins. It does it via two ways, adsorption and catalytic reduction. In general, organic particles are removed…