Additives
Aquarium
Automation
Heating/cooling
Lighting
Skimmer
Filtration
Osmolator/RO
Spare parts
Pump
Reactor
Subsrtats
Others
Aeration
Aquascaping
CO2
Scenery
Fertilizer
Cleaning
Food
Construction
Care
Pump
Food
Filter
Spareparts_title
New products
FilterBoost - 25g
Bacteria
€9.90Price
FilterStart - 10 mL
Bacteria
€9.90Price
PlantStart
Bacteria
€9.90Price
FilterStart Red
Bacteria
€9.90Price
Grotech
Grotech: German precision at the service of the marine aquarium. Technical products, additives and accessories to maintain stable parameters and optimal coral growth.
Grotech, the German reference for reef aquariums
Grotech is a German brand known for its expertise in the development of technical products for marine aquariums. For more than 20 years, they have been offering high-quality solutions to ensure the chemical stability and well-being of your reef.
A complete range of additives and technical equipment
Grotech offers precise additives (Ca, Mg, KH), trace elements, nutritional supplements for corals as well as accessories such as automatic TEC doses, limestone reactors or fluidized bed filters.
Products formulated for performance
The Grotech solutions are designed to meet the requirements of modern reef aquariums. Their chemical purity and stability ensure optimal assimilation by corals.
Why choose Grotech ?
- ✅ German manufacturing with high quality standards
- ✅ Precise dosing for perfect stability
- ✅ Compatibility with all types of reef systems
- ✅ Products tested in real conditions
Adopt the rigor Grotech to guarantee your aquarium a stable, healthy and perfectly controlled environment.
22 products
Grid
Grid-2
List
List-2
Catalog
€49.90Price
Biopellets NP-Minus 1000 ml - Grotech Anti-nitrate granules and phosphates for marine aquariums
The Biopellets NP-Minus 1000 ml of Grotech are highly active biodegradable granules, specifically developed to effectively reduce nitrate and phosphate levels in marine aquariums. They are used exclusively in a biopellet reactor or in a fluidized bed filter.
Thanks...
€49.90Price
€59.90Price
- Pack
- Pack
Additives
Full care for bright corals and healthy
The Grotech Coral Care Set - Coral A, B, C + Vitamino M (4 × 500 ml) is a complete set of Trace elements, vitamins and amino acids essential to promote the Growth, coloring and vitality of your soft corals, corals leathers and hard corals. An all-in-one solution for resplendent corals and a...
€59.90Price
€124.10Price
Effective Reduction of Nitrates and Phosphates
Grotech's NP-minus Biopellets offer an advanced biological solution to maintain an optimal balance in your reef aquarium. They promote the growth of beneficial bacteria that consume nitrates and phosphates,...
€124.10Price
€499.00Price
Macroalgae reactor
Naturally check nutrients with the algae filter Grotech Mab220
The algae filter Grotech MAB220 (Macroalgenbreeder) is an innovative and ecological solution for the natural elimination of nitrates and phosphates . Designed for Aquamariums up to 1800 liters It promotes the growth of macro-algae and stabilizes water...
€499.00Price
€30.00Price
Calcium reactor
Precise CO2 Control for Calcium Reactor
The Grotech bubble counter is an essential accessory for optimizing the efficiency of your calcium reactor. It allows precise visual control of CO2 injection, ensuring optimal dosing for maintaining a perfect...
€30.00Price
€25.90Price
Water tests
Reliable and accurate measurement of salinity
The Densimeter / Areometer Grotech 260 mm with measuring cylinder makes it easy to control and accurately control the salinity of the water of your Aquarium Marine. An indispensable tool for ensuring the stability of the parameters and well-being of the...
€25.90Price
€17.90Price
Additives
Boost the vitality of your fish and corals with Grotech Vitamino m
The Vitamino m 500 ml of Grotech is a concentrated solution of vitamins and essential amino acids Specially formulated for seawater aquariums. It supports growth, strengthening natural coloring and improves fish resistance and invertebrate.
€17.90Price
€18.90Price
Additives
Essential oligo-elements for bright and growing corals
The Grotech CORALL C 500 ml is one Highly concentrated trace elements solution intended for soft corals, leathers and hard . Used with Coral and Coral b It promotes the opening of polyps, intensifies natural colors and stimulates the growth of...
€18.90Price
€17.90Price
Additives
Stimulate the vitality and colors of your corals with Grotech Coral b
The Grotech Coral b 500 ml is a solution of Essential oligo-elements specially formulated for soft corals, corals leathers and hard corals . Enriched with high purity marine minerals, it favors the OPENING POLYPES , intensifies the Natural...
€17.90Price
€19.40Price
Additives
Stimulate the growth and natural color of your corals with Grotech Coral
The Grotech Coral to 500 ml brings a balanced complex of Essential oligo-elements like strontium, magnesium, barium or lithium. Designed for soft corals, leathers and hard It promotes the opening of polyps, growth and natural coloring of your corals without dyes...
€19.40Price
€10.99Price
Comprehensive Protection for your Hands and Arms
Safely handle your corals, rocks and aquarium equipment with these long, sturdy gloves. Essential protection against irritation and injury during your aquatic interventions.
<ul...
€10.99Price
€18.90Price
Magnesium Balance for Thriving Reefs
Maintain the essential balance of your reef aquarium with Grotech Magnesium pro. Specifically formulated to compensate for the common magnesium deficit when using calcium reactors, this supplement ensures an optimal...
€18.90Price