NP-Minus BioPellets 1000ml GROTECH

NP-Minus BioPellets 1000 ml Grotech – biogranules for reducing nitrates and phosphates in marine aquariums

NP-Minus BioPellets Grotech are highly active biological granules, composed exclusively of biodegradable polymers. They gradually dissolve over several months and serve as a carbon source for aerobic bacteria and other microorganisms, thus promoting the natural reduction of nitrates and phosphates in marine aquariums.

Main Features

Operating Principle

In marine aquariums, metabolic cycles transform organic nitrogen and phosphorus compounds into inorganic nitrates and phosphates. NP-Minus biogranules provide an easily assimilable carbon source for adapted bacterial strains, promoting their development.

These bacteria consume nitrates and phosphates for their metabolism, forming a microbial biomass. This biomass is then mechanically removed, particularly by the protein skimmer, allowing for a sustainable reduction of undesirable nutrients.

Installation and Usage Conditions

NP-Minus BioPellets must be used in a biopellet reactor or a fluidized bed filter. This type of filtration ensures strong oxygenation and constant abrasion of the biofilm, guaranteeing stable and continuous efficiency.

The use helps prevent or reduce the growth of cyanobacteria, as the bacteria colonizing the pellets compete with those responsible for undesirable proliferations.

Interaction with the Protein Skimmer

When the fluidized bed filter is placed before the protein skimmer, the excess bacterial biomass is removed by skimming, taking nitrates and phosphates out of the system. In aquariums without a skimmer or with installation after the skimmer, the organic matter produced can serve as a food source for the aquarium inhabitants and the soft corals.

Recommended Dosage

Use between 50 and 200 ml of NP-Minus BioPellets per 100 L of aquarium water, depending on the nutrient load. It is recommended to introduce the pellets gradually, in stages about a week apart, starting with about 30% of the final dose.

This method helps avoid excessive bacterial proliferation that can lead to temporary water turbidity.

Monitoring and Maintenance

The biogranules are generally consumed within 6 to 12 months. Regular recharging is necessary, accompanied by monitoring nitrate and phosphate concentrations to avoid excessively low values. Adjusting the quantity of pellets should always consider the type of aquarium and the population.

In cases of high nutrient load, the complementary use of a phosphate adsorber may be beneficial.

Compatibility and Precautions

The use of UV lamps, ozone, sponge filters, or media promoting bacterial destruction can reduce the effectiveness of NP-Minus BioPellets. Good water oxygenation and appropriate water circulation are essential to ensure the safety of aquarium inhabitants.