Measure & control

Something in the aquarium doesn't seem to be quite right. Algae, aquarium plants or corals die or aquarium fish die for no apparent reason. Recognizable? Then it's time to measure your water values. With an aquarium water test you can measure the most important water values in your aquarium and establish whether your aquarium is in good balance. This is important because the water values tell you whether and which actions you must perform to get a beautiful aquarium or to keep it.

Water quality testers

Everything you need for accurately checking and measuring your water values.

Salifert water quality testers

Salifert Profi Test Kits for reef, marine and advanced freshwater aquarists are some of the most accurate and accurate test kits on the market. Kits are available for all aspec...

Red Sea water quality testers

Everything you need for testing the water quality of your (marine) aquarium. Red Sea offers very good testers for almost every mineral or micro element. If you want to purchase...

AquaForest water quality testers

AquaForest currently only has a few tests on the market, but there will soon be more than one. The tests are of good quality and also provided with comparative fluid.

NYOS water quality testers

NYOS Reefer test kits bring testing to a laboratory level at an attractive price. Water quality testers from the NYOS brand.

Seachem water quality testers

Water quality testers from the Seachem brand.

AquaForest ICP-OES test

ICP-OES Laboratory Analysis of 36 Elements. There is a version for testing your aquarium water and a version for testing both your aquarium water and your RO (osmosis) water. Y...

Hanna pocket photometers

Hanna pocket photometers are very accurate. No longer comparing with a color chart, but reading the concentration of the measured substance directly on the display of the measu...

Milwaukee water quality measuring instruments

Milwaukee offers a wide range of water quality measuring instruments.

ICP-OES Water Analysis - enveloppe

This is a unique way to have the aquarium water professionally tested for all substances present ....

Salt meters

Salt floats, hydrometers (also known as areometer or baumé weigher) and refractometers for accurate measurement and determination of the desired salt content.

Refractometers & ijkvloeistoffen

Refractometers & calibration fluids for Refractometers. A refractometer is used to determine the refractive index of a liquid or a solid. The refractive index of liquids is...

Aqua Medic Hydrometer

High precision hydrometer for determining the specific weight, or the salt content in aquariums. Many inhabitants of the reef are very sensitive to fluctuations, so an accurate...

Tropic Marin Hydrometer

High precision hydrometer for determining the specific weight, or the salt content in aquariums. Many inhabitants of the reef are very sensitive to fluctuations, so an accurate...

AquaSynchro Hydrometer / Densimeter with pointer

This fillable density meter / hydrometer has a very high precision and is easy to use ....

Deep Six Hydrometer

Accurate salt meter to the latest developments. The water flows into the salt meter at 15 cm. depth which prevents incorrect readings. Only the bottom of the device is ...

Grotech Large areometer + thermometer

Grotech Large areometer + thermometer- 26 cm. Incl. measuring cylinder for salt measurement. For very accurate determination of the salt content in the water. Very accurate salt fl...

Compacte Hydrometer + temp. meter

Very compact Hydrometer + temp. meter. Extremely suitable for determining the salinity of your aquarium water. Comes with a solid plastic storage case to protect the glass salt flo...

Aqua Medic salimeter

Salimeter is a density meter (hydrometer) that can easily measure the specific gravity of salt water in aquariums. salimeter has a measuring range of 1,000 to 1,040 with an accurat...

Hanna water-resistant salinity meter seawater

HI98319 is a digital salt tester specially designed for saltwater aquariums and displays results in parts per thousand (ppt), Practical Salinty Units (PSU) or gravity (SG). This wh...

Aqua Medic hydroquick

Hold the hydroquick at the top and slowly submerge it until the inner chamber is filled with water. Make sure there are no air bubbles on the float to guarantee an accurate measure...

Esha Marinomat zoutmeter

This meter is suitable for measuring sea water, but also for brackish water ....

Aqua Medic LF controller with probe

The salinity of water can be determined by measuring the electrical conductivity. A special feature of the conductivity monitor and controller of the LF controller is the wide meas...

Computers & controllers

Computers and controllers for controlling processes in your (marine) aquarium

GHL aquariumcomputers

Aquarium computers and probes from the GHL brand. The latest type is the Profilux 4, which offers endless possibilities.

Neptune Apex Aquariumcomputers

The most successful aquariums are the aquariums with an owner who understands most of what's going on in their little world-in-a-glass box. The real key to enjoying this ho...

Tunze controllers

An unbeatable team - Turbelle® pumps with electronic motor and TUNZE® controllers. They can reproduce real reef currents in your tank. TUNZE® controllers concentrate on the ...

Hobby Bioterm temperature controller

Hobby Bioterm temperature controller allows you to set the temperature at which a device, for example, should turn on a chiller or heater or turn it off.

IKS aquastar

Aquarium computers and probes from the brand IKS aquastar

PH meters

A PH meter measures the acidity of the water.

Milwaukee pH/Temp waterproof tester

Milwaukee pH / Temp waterproof tester with automatic 2 point calibration. Milwaukee ph55 ph meter is a waterproof pH meter with temperature measurement and automatic calibration. E...

Ruwal pH pen - handheld meter

Tester with electronic precision, double calibration pH7 and pH4 (or pH 10) Complete with accessories and buffer solutions pH 4 and pH 7 for calibration ....

AquaHolland pH electrode

Precise pH electrode, compatible with most automatic dosing and measuring equipment and pH meters. The pH electrode is made of extra durable ABS plastic, comes with a long cable fr...

Bubble Magus pH-meter incl. electrode en trafo

Digital pH meter including electrode and transformer of the brand Bubble Magus ...

Hobby pH Control ECO - pH controller with visual alarm - del...

With optional functions for night-time switching of the pH control, for the six-weekly calibration reminder and a visual pH alarm. For the connection of commercially available pH e...

Milwaukee pH hand tester 1 point calibration, 0.2% accurate

The pH600 is a pH tester specially designed for the aquarium market. The calibration procedure is very simple and fast. This tester has 1 point manual calibration, ± 0.1 pH accura...

Aqua Medic pH-control-Set

Aqua Medic pH control set for controlling, for example, a lime reactor. Consisting of controller, pH electrode, electrode holder, pH test solution and solenoid valve / solenoid val...

Digital pH tester ATC

Ditigal pH meter is an improved version that is very accurate for the measuring range of 0.00-14.00 pH with ± 0.01 accuracy, ATC function and large LCD display, reliable and easy ...

Aqua Medic pH monitor

The pH monitor is a precision instrument for permanently controlling the pH value in aquariums. The LED display continuously shows the current pH value of the aquarium water. The m...

Aqua-Light PH electrode industrial glass

pH electrode industry / glass - BNC connector 2m cable. Very professional quality pH electrode ....

TDS meters

A TDS meter measures the amount of dissolved substances in the water. These meters are generally used to determine the quality of osmosis water.

DUAL TDS monitor - for measuring dissolved substances

The DM-1 helps you to measure the tap water at any time against the purified water that you leave your water filtration system ....

Milwaukee EC/TDS/Temp waterproof tester

EC59 Pocket-size conductivity / TDS / Temperature meter with replaceable electrode

D&D Pen type digital TDS meter

A TDS meter measures the amount of Total Dissolved Solids (TDS) in a solution. This is used to determine the purity of the water produced by your RO unit and gives an indication wh...

D&D in-line dual TDS meter

Inline TDS meter A TDS meter measures the amount of Total Dissolved Solids (TDS) in a solution. This measurement is used to determine the purity of the water produced by your RO un...

Digital conductivity & TDS tester

Digital conductivity & TDS tester is generally used to check whether the osmosis water from your osmosis device is still pure, or whether it is time to replace the filter cartr...

D&D TDS calibration solution

342 PPM TDS Calibration Solution 90ml Highly accurate and stable calibration fluid for calibrating TDS meters ....

Gadgets

Nice gadgets for your (sea) aquarium

Aquadetect Wateralarm

The Aqua Detect protects your home and property against water damage and mold. Place the device in a place where the water pipe is under permanent pressure or can freeze. Other app...

QEye Wifi Camera

The QEye WIFI camera, with a resolution of up to 720p, can be controlled via a smartphone or tablet under iOS and Android. The QEye WIFI camera is very easy to use and is directly ...

QShooter - Fish Feeder

Qshooter is a pellet gun that is fun and fun to use. It is operated with the remote control and makes it possible to feed the fish in an unusual way through this pellet in the a .....

Calibration fluid

Liquids for calibrating / calibrating your measuring equipment (pH, Ms, TDS, Mv etc.)

Aqua Medic test liquid

Aqua Medic has a wide range of test liquids such as pH 4, pH 7, pH 9, KCL solution for pH + mV electrodes, 230 mV, 250 μS and 50 mS

Fauna Marin Multi Reference

With this reference fluid you can test your new or old test set for accuracy. ...

Aquatronica pH 4 Ijkvloeistof (50ml)

The ph4 calibration fluid is used to calibrate the PH electrodes Contents: 50ml PH4 Buffer solution ...

Aquatronica pH 7 Ijkvloeistof (75ml)

The ph7 calibration fluid is used to calibrate the PH electrodes Contents: 75ml PH7 Buffer solution ...

Aquatronica pH 10 Ijkvloeistof (75ml)

The ph10 calibration fluid is used to calibrate the PH electrodes Contents: 50ml PH10 Buffer solution ...

Aquatronica Calibration fluid 1.4 mS (fresh water conductivi...

For calibrating (calibrating) your conductivity electrode, so that you are always assured of the correct measurement values ....

Aquatronica Calibration fluid 53mS - bottle (density seawate...

Very accurate and stable calibration fluid for salinity probes at a value of exactly 53mS ....

Aquatronica IJkvloeistof redox 220mV- fles (ORP - redox) (50...

The IJkopload 240 mV makes it possible to calibrate the Redox electrode (ORP) correctly ....

Aquatronica Cleaning fluid for electrodes - bottle (50ml)

For cleaning your electrodes, so that you are always assured of the correct measurement values ....

Storage liquid pH / ORP electrodes - bottle a 60ml.

To optimally protect the electrode of your pH meter, we recommend that you keep it moist with this storage solution with special formula KCI solution. Ensure an optimal meeting and...

Hanna Calibration fluid pH 4.01 1 bag of 20ml.

Hanna Calibration fluid pH 4.01 1 bag of 20ml ....

Hanna Calibration liquid pH 7.01 1 bag of 20 ml.

Hanna Calibration liquid pH 7.01 1 bag of 20 ml ....

Hanna Calibration liquid pH 10.01 1 bag of 20 ml.

HI70010C Calibration Efficiency of pH 10.01 ...

Aqua Light pH calibration solution PH 4 50 ml bottle

Calibration solution pH 4 from the Aqua Light brand. A bottle contains 50 ml of this solution ....

Aqua Light pH calibration solution PH 7 50 ml bottle

Calibration solution pH 7 from the Aqua Light brand. A bottle contains 50 ml of this solution ....

Aqua Light pH calibration solution PH 9 50 ml bottle

Calibration solution pH 9 from the Aqua Light brand. A bottle contains 50 ml of this solution ....

Hanna calibration liquid for salinity meter 1 bag 20ml.

HI-70024p is a top quality calibration solution for the salinity of seawater. This liquid is suitable for calibrating the Hanna salinity meter ....

Hanna Cleaning solution for PH and redox electrodes 500 ml

Cleaning solution for PH and redox electrodes 500 ml from the Hanna brand ...

Salifert Refractocheck

Calibration fluid (35ppt) for calibrating a refractometer ....

NIGHTSUN Refractocheck

Refractocheck - fluid for the exact calibration of a refractometer ...

DSR Reference solution Sg, Kh, Ca, Mg, K,Sr, B,I,PO4,NO3,PH

DSR Reference is a saltwater reference fluid for checking your measuring temperature ...

Other Measure & control

Other products in the section Measure & control

Level control (Refill system)

Level control / Top-up system for your (sea) aquarium

Thermometers

Aquarium thermometers come in all shapes, sizes and price ranges. Here you will find all types of aquarium thermeters.

Holders for sensors, hoses and probes

Holders for clamping / holding sensors, probes and hoses. Ideal for holding GHL, APEX and more probes. Also suitable for holding snakes.

AutoAqua Smart AWC - Auto Water Change

Smart AWC Touch - Auto Water Change - is a very compact intelligent system that perfectly fulfills 2 functions: 1. Automatically compensating the water evaporation water from the a...

Tunze Calcium Dispenser

The addition of lime water is another method to increase calcium in marine aquariums. The calcium hydroxide is dissolved in a separate chamber by means of the water jet from the do...

Tunze Calcium Automatic

The Automatic Calcium Dispenser 3170 can be supplemented with a second reaction step. A Comline housing is equipped with an additional granulation chamber. They can be placed side ...

Adapter connection with switch - 1x16A

Very handy plug / adapter connection with switch. This way, you can easily switch off and switch on equipment without removing the plug from the socket. ...