Chemi-pure elite

[spawn]

I use it now & have from the beginning in combination with a bag purigen , my Po4 is at 0. I order it by the case from J&L change it out every 2 months. Also for the last 3.5 months I've run additional carbon for water clarity, that gets changed monthly. I don't have a sump or reactors so it strategically placed for max flow though.