NO3:PO4-X - Red Sea

Comparing NO3: PO4-X to other methods of algae nutrient reduction:

Reduction Method	NO₃ Reduction	PO₄ Reduction	Controlled reduction	Essential equipment
NO₃: PO₄-X	Yes	Yes	Yes	Protein skimmer
Technical comments	Researched and tested formula that includes all of the necessary elements for the balanced and controlled, long term reduction of both NO₃ & PO₄ without the need for reactors or replacement media. Each carbon in the NOPOX complex is utilized by different strains of microorganisms while the other organic-bonded elements ensure a steady bacterial propagation and the complete nitrate reduction of nitrate to nitrogen gas as well as the absorption and utilization of phosphate by the bacteria. The fine control of the nitrate and phosphate levels provided by monitored dosing of NO₃:PO₄-X guarantees the gradual changes and accurate maintenance of the nutrient levels. This prevents the destruction of the Zooxanthellae population that can cause UV shock and starvation of corals
VSV (Vodka + Sugar + Vinegar)	Yes	Yes	Yes	Protein skimmer
Technical comments	Rapid reduction of NO₃ and PO₄ however over the long term, a lack of essential elements will reduce effectiveness and may lead to the collapse of the bacteria population. System can produce H₂S which is toxic for corals and fish.
Vodka or Ethanol	Yes	No	No	Protein skimmer
Technical comments	Rapid reduction of NO₃ but does not reduce PO₄. If not combined with additional PO₄ reduction the N:P ratio will be disturbed leading to outbreaks of cyanobacteria. Over the long term a lack of essential elements will reduce effectiveness and may lead to the collapse of the bacteria population. System can produce H₂S which is toxic for corals and fish.
De-Nitrators	Yes	No	No	De- Nitrification reactor
Technical comments	Rapid reduction of NO₃ but does not reduce PO₄. If not combined with additional PO₄ reduction the N:P ratio will be disturbed leading to outbreaks of cyanobacteria. Carbon Systems: Inherently unstable and difficult to regulate. System can produce N₂O and H₂S which is toxic for corals and fish. Over the long term a lack of essential elements will reduce effectiveness and may lead to the collapse of the bacteria population. Sulphur Systems: Relatively low maintenance however they easily become clogged and can cause sudden pH drops.
PO₄ removers	NO	Yes	No	Media reactor
Technical comments	Rapid but uncontrolled reduction of NO₃/PO₄ that can easily cause stress to corals. Some products such as Zeolite/ Ferric Hydroxide ion exchangers typically release undesirable cations. Lower quality products may also release undesirable metals (Al, Fe).
Refugium	Yes	Yes	No	Refugium
Technical comments	Low maintenance but slow and uncontrolled NO₃/PO₄ reduction. To effectively treat all of the nutrients generated in a full reef, the size of the refugium will need to be similar in volume to the aquarium itself. Smaller refugiums can be used as a partial solution alongside other methods. In the event of collapse of the algae population allelochemicals (toxins for corals) are released to the system.