DEEP BLUE PRO FILTER PADS AMMONIA & NITRATE REDUCER CARBON & POLYFIBER ( 4 )

( 1 ) 18" x 30" ADVANCED POLYFIBER PAD. 1/2" Thick 18" x 30" ADVANCED POLYFIBER PAD ( 1 ) 18" x 10" NITRATE REDUCER PAD. 18" x 10" NITRATE REDUCER PAD ( 1 ) 18" x 10" AMMONIA REDUCER PAD. Rapidly reduces nitrate levels.

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