TDS after the membrane is 15ppm and after the DI is 0ppm. i changed the particle filter and the carbon block. still smells. doesnt really taste bad if you hold your nose and i am sure the fish dont mind smelling fishy, but i would like to drink the non fishy smelling water. the first two filters did not smell so i assume that it must be the Resin cannister. has anyone experienced this before?