Check the listing for details. NeoPhos - Balanced Phosphorus Supplement (4 L) - Brightwell. Condition: New. Listed at 44.99 USD. Balanced Phosphorus Source for Phosphorus-Limited, Low-Nutrient Reef Aquaria Used in conjunction with MICROBACTER7 and REEF BIOFUEL or KATALYST, enables natural nitrogen uptake to take place in systems with inadequate phosphorus content, lowering ammonia, nitrite, and nitrate concentrations without the use of chemical filtration media and without resorting to polluting the system with organic material to raise the phosphorus content. Recommended for use by advanced reef aquarists maintaining ultra-low nutrient content systems, only. May be used with MICROBACTER7, REEF BIOFUEL and/or KATALYST, and NEONITRO to achieve desired nutrient content in reef aquaria for improved health and coloration of inhabitants. Listing and template services provided by inkFrog