Grotech BioPelletReactor BPR-150-Intern incl. EHEIM CompactON 2100 + 1000ml Biopellets

The Grotech BioPellet Reactor BPR-150-Internal, including EHEIM CompactON 2100 and 1000ml Biopellets, is the complete solution for effective nitrate and phosphate reduction in your marine aquarium. Thanks to the...

The BPR-150 Intern is a high-performance biopellet reactor for use in the filter sump of marine aquariums. Combined with the powerful EHEIM CompactON 2100 and 1000 ml NP-Minus BioPellets, this system provides a complete solution for effectively reducing nitrate and phosphate levels.

Features of the BPR-150 Intern

• Suitable for aquariums up to 1500 liters
• For use only in the filter sump
• Dimensions: 165 × 165 × 550 mm
• Minimum water level: 13 cm
• Maximum filling quantity: 3000 ml biopellets
• Included
• EHEIM CompactON 2100 (38 W)
• 1000 ml NP-Minus BioPellets

How NP-Minus BioPellets Works

The NP-Minus BioPellets consist of 100% biodegradable polymers. They dissolve slowly over several months and serve as a carbon source for aerobic bacteria. These bacteria convert excess nitrate and phosphate into bacterial biomass, reducing the nutrient load in the water.

When the pellets are used in a reactor, they are constantly in motion. This ensures:

• Optimal oxygen supply
• Constant abrasion of the biofilm
• Efficient growth of bacterial colonies
• Reduction or inhibition of cyanobacteria
• A well-functioning pellet reactor works fully automatically: the
• bacterial population adapts to the available nutrients.

Removal of nitrate and phosphate

There are two working methods:

1. Reactor before the protein skimmer
The excess biomass is separated directly via the skimmer.
→ Maximum removal of nitrate and phosphate.

2. Reactor after or without protein skimmer
The bacterial biomass produced serves as food for corals and filter-feeding animals. Some of it is further broken down in anaerobic zones (denitrification).

In all cases, a good oxygen supply is essential, especially at night.

Advantages over other methods

• No risk of bacterial growth as with the vodka method
• No chance of dosing errors with alcohol
• No unwanted biofilm on glass and decoration
• No daily manual dosing required
• Very stable and safe to use

Dosage of the biopellets

• 50 to 200 ml per 100 liters of water, depending on the nutrient load
• Start with about 30% of the required amount and increase weekly
• Prevents bacterial growth in the first weeks
• Pellets are used up after 6 to 12 months, additional dosing is then required
• Overdose within the recommended amount is not possible

A bacterial bloom occurs almost exclusively at starting values above 20 mg/l nitrate.

Important points of interest

• Use only in a biopellet reactor or fluidized bed filter
• UV and ozone devices can slow down bacterial development
• Filter sponges and media that kill bacteria reduce effectiveness
• In case of very high phosphate loads, an additional phosphate adsorber may be necessary.