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.

Tropic Marin water quality testers

Everything you need for testing the water quality of your (marine) aquarium. Tropic Marin offers a very good tester for almost every mineral or micro element.

Seachem water quality testers

Water quality testers from the Seachem brand.

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...

Fauna Marin Aquahometesten

The Fauna Marin Aquahome tests have a very high resolution and can determine the concentration with a particularly high accuracy.

Milwaukee water quality measuring instruments

Milwaukee offers a wide range of water quality measuring instruments.

Aqua Master Tools

Aqua Master Tools is the Dutch supplier of user-friendly and reliable pH, EC and temperature meters. The meters are used for swimming pools, aquariums, Jacuzzis, ponds and for m...

AutoAqua Smart Stir & roermagneetjes

The Smart Stir is a handy gadget to aid in accurate water testing. Water tests are an important part of running a successful aquarium. There are also separate extra stirring mag...

Hanna HI97105c Marine Master set

Hanna HI97105c Marine Master Set Measure 6 important parameters with one photometer for your seawater aquarium The HI97105 from Hanna Instruments measures alkalinity, calcium, phos...

Test ICP

An ICP test gives you a quick and easy overview of almost all water values in your marine aquarium. You must send these tests to a laboratory.

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...

ICP-OES Water Analysis - enveloppe

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

Fauna Marin SRL ICP Wateranalysis

The Fauna Marin SRL ICP Water Analysis is simple, fast and accurate...

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 LF controller conductivity monitor and controller is the wide measuring a...

Fauna Marin Salinity Manager Cleaning Solution 100ML

Fauna Marin Salinity Manager Cleaning Solution 100ml - For cleaning the Salinity Manager probe. Can also be used for cleaning other salt meters....

Fauna Marin Salinity Manager

The measuring instrument for simple, fast and accurate measurement of the salinity in marine aquariums....

Fauna Marin Salinity Reference 100ml

Fauna Marin Salinity Reference 35 ppt - 100ml - test uw Salinity Manager!...

ARKA Araometer incl. Thermometer + Cylinder

High-quality hydrometer, incl. Thermometer, for optimal measurement of salinity / density and temperature in any saltwater aquarium. ...

Prof. dr. seawater refractometer with luxury black bag

Very professional and accurate refractometer, specially developed for measuring seawater with the appropriate scale in both SG and PPT....

Milwaukee Digitale refractometer MA887 (1000-1114 sg.)

Refractometers are optical instruments that serve to determine the concentration of certain substances from the angle of refraction of light as it passes through these liquids....

Tunze mV Electrode

Made of glass, BNC connection, cable length 2 m (78.7 in.), suitable to replace Redox Controller 7075,000, 7000,000 or commercially available mV measuring instruments with BNC conn...

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 the calibration of TDS meters ....

AutoAqua TDS monitor

AutoAqua TDS monitor is available in 1, 2 or 3 fold version.

Milwaukee TDS waterproof hand tester, manual calibration - 0...

The Milwaukee T75 TDS meter is specifically designed for water analysis in aquariums, aquaculture and swimming pools. Replaceable electrode. Range 0 to 1999 ppm....

HM Digital – handhold tester TDS + temp

The TDS-4TM handheld meter is ideal for testing TDS and salt levels in freshwater aquariums and ponds. It can also be used for testing water filtration and purification systems, su...

PH meters

A PH meter measures the acidity of the water.

AquaLight pH meter & Controller, PH-2010 met electrode

pH meter and controller, PH-2010 with electrode. Suitable for the automatic control of a Co2 installation or a lime reactor....

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...

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 regulating the pH value in aquariums. The LED display continuously shows the current pH value of the aquarium water. The me...

Aqua-Light PH electrode industrial glass

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

Aqua Medic pH computer-Set

The pH computer set uses a modern microprocessor, which enables very accurate measurement and control. The pH computer set is used to measure accurate pH values in the aquarium ......

Milwaukee pH monitor incl. pH electrode MC120 PRO

The Milwaukee MC120 PRO High Range pH Monitor provides lab grade accuracy with easily visible continuous monitoring of pH levels with alarms....

Milwaukee pH Controller incl. pH electrode

The Milwaukee pH Controller incl. pH electrode MC122 ensures optimal CO2 control for healthy fish and beautiful plant growth!...

Milwaukee pH + Orp controller incl. pH en ORP electrode

The Milwaukee MC125 PRO pH and ORP Controller is designed for people who want to automatically measure and adjust pH and ORP levels with one simple controller. Just adjust your pH ...

AquaLight pH Controller PH-201

For measuring and controlling pH values in the aquarium. Including socket for connecting CO2 bottles or dosing systems...

pH indicatorstrips pH 0-14

pH indicatorstrips pH 0-14 non-bleeding / pH-indicator strips pH 0 - 14 Universal indicator...

Aqua Medic Plastic probe pH

pH plastic probe from Aqua Medic. qua Medic pH and mV electrodes are of high quality for accurate measurements and long, trouble-free operation....

Milwaukee Smart Portable pH/°C Meter met ATC MW102

The Milwaukee MW102 lightweight and portable pH and temperature meter is reliable, fast, easy to use and can take a beating. It is accurate to ± 0.02 pH, and comes with...

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

AutoAqua Smart Security Systems

Why choose AutoAqua Smart security? Smart Security uses the uniquely designed non-contact optical sensor to secure your aquarium. No moving parts to break. Magnetically c...

KH Guardion Pro & Reagents

KH Guardion Pro & Reagents

Aquatronica aquariumcomputers

Aquarium computers and probes of the brand Aquatronica.

Aqua Medic mV computer set

The mV computer set uses the same microprocessor technology as the pH computer set. Waterproof touch keys are used to set the required values and calibrate the electrode...

Hobby Aqua Timer Pro - Time clock with second function

Timer with seconds function 9 switch-on and switch-off times can be programmed. Shortest switching interval 1 second....

AquaHolland Conductivity meter incl. electrode and temp. com...

AquaHolland Conductivity meter incl. electrode and temp. compensation in suitcase. Battery 9V. Measuring range 199.9 us - 1999.9 mS - 19.99 mS. Suitable for freshwater....

Saga ORP controller ORP-303C

This type of ORP controller provides continuous and accurate MV reading. It also provides an alarm when MV reading is out of the user set range. The controller has an EU euro cord ...

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

Milwaukee Test and Cleaning Fluid

Milwaukee has a wide range of test and cleaning fluids such as pH 4, pH 7, pH 9, KCL solution for pH + mV Electrodes, 230 mV, 250 μS and 50 mS

Aquatronica test and cleaning fluid

Aquatronica has a wide range of test and cleaning fluids 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. ...

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 ....

Aqua Light pH calibration solution PH 4 50 ml bottle

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

Hanna calibration solution 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 ....

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 ...

Aqua Light Conductivity Calibration Solution 1413 µS - 50 m...

This conductivity calibration solution is a premium quality 1413 µS/cm calibration solution traceable to NIST....

Conductivity calibration solution 80 mS - 50 ml

Conductivity solution 80000 µS/cm for calibration....

cleaning & storage fluids

Cleaning agents & storage fluids for electrodes.

Hanna Cleaning solution for PH and redox electrodes 500 ml

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

Aqua Light Storage fluid for PH and redox electrodes 50ml

Storage liquid for electrodes of the Aqua Light brand. 50 ml ....

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...

Hobby BNC extension cable 2 mtr.

Hobby BNC extension cable for pH electrode with a BNC connection. Length 2 meters....