Hi Byron. You seem knowledgeable about nitrites. My 55 gal. started new on 3/2/2012 . nitrites are off the chart. Bought a purigen sandy mixture in a mesh like bag and added behind filter yesterday. still high. some guppies already died. some turnrd upside down on bottom yesterday but scooped them into hospital ( 5 gal.) tank and they are good today. Hospital tank readings 0 ppm on nitrites and nitrates. how can i remove this deadly mineral before i loose my angel fish , dwarf gouramis , lyre tail mollies , catfish , red tailed shark , neons and black tetras ?
I will reply via PM as it will be easier (more space). Byron.