I have a Rena Filstar P3. That's 3 trays. My question is, from bottom tray, middle, and top tray, what is the order of the filter media?

by Ken Weaver
(Lititz, Pa, USA)

I know the very bottom is the 20 ppm. Then the 30 ppm. In what order does the Super Activated Carbon, Water Softner, Bio-Chem Zorb, Nitra-Zorb, Phos-Zorb, Bio-Chem Stars, Bio-Chem Ceramic, and Zeolite Ammonia Remover? Go either from bottom to top or from top to bottom. So that I put them in the proper order.

A: This question has been asked and answered already. Please look in the filter setup FAQ section. Generally, stacking order from the bottom basket is foams on the bottom, bio-media, chemical media, micro-filter.