top of page
Plus-NP 250ml (#24455).png


Liquid concentrate for supplying important nutrients for corals



Product description

In order to thrive, corals require certain minimum concentrations of phosphates and nitrogen compounds for their metabolism and the metabolism of their zooxanthellae. Aquariums that are very low in nutrients (ULNS = ultra low nutrient system) are particularly prone to a lack of these compounds.  

Tropic Marin® Plus-NP provides these phosphates and nitrogen compounds in concentrations that are tailored to the corals’ needs. As they are bound by an organic energy source, nitrogen and phosphates can be utilized by corals more efficiently than inorganic nutritional salt additives. This approach minimizes the loss of nutrients caused by denitrification and adsorption, prevents nutrient deficiency in the corals and restores growth.  

The liquid concentrate Plus-NP is easy to use and is suitable both for manual dosing and for dosing pumps.



  • A highly concentrated phosphate and nitrogen solution to counteract nutrient limitations for corals

  • Designed specifically for reef aquariums that are very low in nutrients (ULNS = ultra low nutrient system)

  • Suitable for an aquarium stocked with soft corals, LPS and SPS

  • Easy-to-dose liquid solution

  • Suitable for both manual dosage and for dosing pumps



phosphates, organic and inorganic nitrogen compounds, as well as an organic carbon source


Application & Dosage

Turn the pump head counterclockwise until it pops out. Add 1 ml (1 pump-full) to every 100 l/26 US-gal. of aquarium system volume every day until the nutrient limitation in the corals has been rectified and the corals display a normal level of growth and coloration.

Maximum dose: 1 ml per 100 l/26 US-gal. of aquarium system volume daily.  

Suitable for both manual dosage and for dosing pumps. Store the bottle tightly sealed, in a cool and dark place!


Other product recommendations

To regularly determine the nutrient concentrations, we recommend the Tropic Marin® Nitrite/Nitrate-Test and Tropic Marin® Phosphate-Test.


Frequently asked questions

Answers to frequently asked questions about this product can be found in our FAQ section.

Container sizes

250 ml/ 8.45 fl.oz.              Art. Nr. 24454

bottom of page