AquaCera combine the techology ceramic filtration with the latest carbon filter technology. The CeraPlus fllter adds a coconut shell granular activated carbon for superior chlorine reduction. CeraUltra utilizes a carbon block for not only chlorine reduction, but also reduces lead, mercury, VOC's and heavy metals. CeraCarb fuses carbon media with in the ceramic shell to bring exceptional chemical removal capabilities. Cerametix is the most advanced filter to reduce chloramines, arsenic, and fluoride.