4 / 6mm adjustment valve Regulating valve for hose with a diameter of 4/6 mm. The tap can be used for both air and water (nitrate reducer and calcium reactor). High quality plastic guaranteeing a long service life. Easy to adjust flow rate with precision.

T Reduction 16/22 - 4/6mm Reduction T is used for the connection of bypass filters like p. ex. the nitrate reducer or the calcium reactor.

T Reduction 12/16 - 4/6mm Reduction T is used for the connection of bypass filters like p. ex. the nitrate reducer or the calcium reactor.

T Reduction 9/12 - 4/6mm Reduction T is used for the connection of bypass filters like p. ex. the nitrate reducer or the calcium reactor.

NP-Minus BioPellets 3500ml Important: operating ONLY in a biopelletreactor or fluid bed filter ! The highly active NP-Minus BioPellets consist of 100% biodegradable polymers. These dissolve over a period of several months and act as a carbon source for aerobic bacteria and other microorganisms. The pellets act as a food source for these microorganisms....

NP-Minus BioPellets 500ml Important: operating ONLY in a biopelletreactor or fluid bed filter ! The highly active NP-Minus BioPellets consist of 100% biodegradable polymers. These dissolve over a period of several months and act as a carbon source for aerobic bacteria and other microorganisms. The pellets act as a food source for these...

CO2 solenoid M-ventil 1/2" M-ventil 1/2”  for water is intended for automatic control of reverse osmosis units. The brass body has connections for 1/2” BSP male fittings and is recommended only for use with tap water. The power uptake is 6 watts.

Bubble counter Grotech Diameter 50mm, Lenght 200mm with hose connectors and holder.

Bubble counter plus

Magnesium pro (pellets) 1000g The addition for the calcium reactor for increase of the Magnesium content. In the marine water aquarium a great quantity of Calcium and Magnesium is required in order to achieve an optimum growth of corals and red lime algaes. By the normally used materials in the calcium reactor the Calcium content, however, will be...

Pellet Filter Pro Biological pellet filter The Pellet Filter Pro is a high-performance biological pellet filter. Water enters the filter from below and keeps the granules in suspension - this results in an enormous surface area serving as a colonization substrate for bacteria, which are additionally optimally supplied with water and nutrients. When the pellets...

Algae reactor AR-pro XL (pump included) Simple and effective natural nutrient control method that helps promote a healthy and thriving reef tank! The AR-Pro series incorporates a unique design that allows macro algae such as Chaetomorpha to grow with great yields, leading to the effective nutrient export of unwanted nitrates and phosphates. In addition to...