Marco Rocks - Coralline Premium Shelf Rock - 20lb Biological Filtration Media Hybrid reef lighting ready: Excellent

Hybrid reef lighting ready: Excellent as a broad fill-light source alongside Hydra

the HYDROS system must also include compatible pH monitoring

Product type: Spherical activated carbon filtration media

Enhanced fluorescence: The REEF-SPEC Blue channel is supported by violet

or sump surfaces

Marco Rocks - Coralline Premium Shelf Rock - 20lb Biological Filtration Media Hybrid reef lighting ready: ExcellentMarco Rocks Coralline Premium Shelf Rock 20lb Marco Rocks Coralline Premium Shelf Rock 20lb is coralline coloured shelf rock selected for building layered reef aquarium aquascapes with ledges and horizontal coral placement areas. Coralline Premium Shelf Rock for Ledges and Overhangs Premium Shelf Rock is one of the key MarcoRocks shapes for creating tiered reef structures. The flatter natural shapes lend themselves to horizontal stacking, coral