MAXSPECT Denitrification Catalyst Refill Pack for Nano-Tech Anaerobic (5 Pieces / pack)

$10.00
MAXSPECT Denitrification Catalyst Refill Pack for Nano-Tech Anaerobic (5 Pieces / pack)

Denitrification Catalyst to be placed in between the blocks. The Denitrification Catalyst will be slowly used up and should be replaced every 2 months for optimal results.
Note: Anaerobic block not included.