RO DI FILTER SET SED/CARB/CARB/DI) 10 MICRON SEDIMENT FILTER1) 5 MICRON COCONUT CARBON BLOCK1)ONE MICRON COCONUT CARBON BLOCK1) FULL SIZE VERTICAL COLOR CHANGING REFILLABLE DI CARTRIDGEFor use on all Reefkeepers, where you have 4 cartridges across the bottom. Fits all standard Reefkeeper units 1 mic carbon 1 mic sediment Refillable DI cart Float valve
