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Water Tests - Aquarium Maintenance

Regular testing is important to get a complete picture of water quality.

It is therefore wise to do a drop test monthly, as this will give you a more complete and precise picture.

Almost all water values ​​are connected to each other. A complete picture of your water quality is therefore of great importance.

Are the water values ​​too high or too low? Then take action to correct this.

If you really want to do it right, consider the needs of the plants and fish in your aquarium. For example, some plants need some extra calcium and there are shrimps that prefer a lower pH value.

We have different types of water tests such as test strips, individual drop tests and complete test kits, which are listed below.

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Sera Quick Test 6 in 1 - Watertest Save 18% Save %

Sera Quick Test 6 in 1

18,39
18,39 - 18,39
18,39
14,99
14,99 - 14,99
14,99
22 in stock

Quick and easy check Routine check or safety check: With the Quick Test, sera offers the optimal possibility to easily check the most importan...

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Sera Testvloeistoffen Ph 4

Sera Test Solutions

8,49 - 8,49
8,49
8,49 - 8,49
8,49
3 in stock

Test solution for electronic pH devices The various sera test solutions (pH 4.0 / pH 7.0 / pH 9.2) are suitable for all electronic pH devices.

Sera No3-Test (Nitraat)

Sera No3 Test (Nitrate)

0,00 - 0,00
0,00
15,69
15,69 - 15,69
15,69
Only 1 left!

For the simple determination of the nitrate content in fresh and sea water Nitrate (NO 3 ) is an indication of a heavy organic load. The source ...

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Sera PH-Test

Sera PH Test

8,89 - 8,89
8,89
8,89
8,89 - 8,89
8,89
Only 1 left!

To determine the pH value in freshwater, seawater and in the pond in a simple way. For pH values ​​that are too low, we recommend sera KH/pH-plu...

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Sera Po4-Test (Fosfaat)

Sera Po4 Test (Phosphate)

16,69 - 16,69
16,69
16,69
16,69 - 16,69
16,69
2 in stock

For the simple determination of the phosphate content in fresh and sea water Fish excrement and feeding are both possible causes of increased ph...

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Moerings Testset
Sold out

Moerings Test Set

24,95 - 24,95
24,95
24,95 - 24,95
24,95
Out of stock

The Moerings test set is suitable for measuring the pH, GH and KH value of pond and aquarium water in a very accurate manner. ...

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Sera KH-Test

Sera KH Test

8,89 - 8,89
8,89
8,89
8,89 - 8,89
8,89
Only 1 left!

To determine the carbonate hardness in fresh and sea water in a simple way For approx. 390 °dKH. For low KH values ​​we recommend sera KH/pH-p...

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Sera Co2-Indicatorvloeistof
Sold out

Sera Co2 Indicator Fluid

8,79 - 8,79
8,79
8,79 - 8,79
8,79
Out of stock

Sera Co2 Indicator Fluid Replacement fluid for the Sera Co2-Continutest.

Sera No2-Test (Nitriet)

Sera No2 Test (Nitrite)

12,99 - 12,99
12,99
12,99
12,99 - 12,99
12,99
2 in stock

For the simple determination of the nitrite content in fresh and sea water Nitrite (NO 2 ) is considered one of the most toxic substances for fi...

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Sera NH4/NH3-Test

Sera NH4/NH3 Test

16,89 - 16,89
16,89
16,89 - 16,89
16,89
2 in stock

For the simple determination of the ammonium/ammonia concentration in fresh and sea water Ammonium and ammonia come primarily from fish feces. D...

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Sera Aqua-Test Box Cu
Save 26% Save %

Sera Aqua-Test Box

95,09
95,09 - 95,09
95,09
69,99
69,99 - 69,99
69,99
Only 1 left!

Advanced water testing An experienced aquarist checks the water in his aquarium regularly. This way, preventive measures against algae, for exam...

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Sera GH-Test

Sera GH Test

8,89 - 8,89
8,89
8,89
8,89 - 8,89
8,89
2 in stock

To determine the total hardness in a simple way For approx. 420 °dGH. If the total hardness is too low, we recommend sera mineral salt. Too hi...

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Sera Aqua-Test Set

Sera Aqua-Test Set

31,99 - 31,99
31,99
31,99
31,99 - 31,99
31,99
3 in stock

Get to know your aquarium water Only those who know their water values ​​can respond appropriately and in a timely manner and prevent irregulari...

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Colombo Test Lab
Save 26% Save %

Colombo Test Lab

53,99
53,99 - 53,99
53,99
39,99
39,99 - 39,99
39,99
4 in stock

Colombo Test Lab Complete test kit with professional drop tests for testing water in aquariums and ponds. The case includes test tubes, color ca...

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Sera FE-Test (Ijzer)

Sera FE Test (Iron)

16,49 - 16,49
16,49
16,49
16,49 - 16,49
16,49
3 in stock

For the simple determination of the iron content in fresh and sea water Iron (Fe) is an important component of plant nutrition. If the plants ha...

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Sera SiO3-Test Silicaat

Sera SiO3 Test (Silicate)

18,69 - 18,69
18,69
18,69
18,69 - 18,69
18,69
Only 1 left!

For the simple determination of the silicate content in fresh and sea water Silicate (SiO 3 ) promotes the growth of diatoms in marine and fresh...

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Tetra Test AlgeaControll 3in1

Tetra Test AlgeaControll 3in1

0,00 - 0,00
0,00
14,99
14,99 - 14,99
14,99
11 in stock

Tetra Test AlgaeControl 3in1 quickly and easily tests the two most important algae growth parameters.

Seachem Ammonia Alert

Sera NH4/NH3 Test

13,50 - 13,50
13,50
13,50 - 13,50
13,50
2 in stock

For the simple determination of the ammonium/ammonia concentration in fresh and sea water Ammonium and ammonia come primarily from fish feces. D...

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Sera Co2-Continuetest

Sera Co2 Continuous Test

16,69 - 16,69
16,69
16,69 - 16,69
16,69
4 in stock

Sera Co2 Continuous Test CO2 is considered one of the most important nutrients for aquatic plants. A shortage can therefore have enormous cons...

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Sera Meetcuvetten

Sera Measuring Cuvettes

7,19 - 7,19
7,19
7,19
7,19 - 7,19
7,19
Only 1 left!

Supplementary set with three cuvettes for performing water tests The high-quality sera cuvettes made of glass are ideally suited for performing ...

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Sera Cl-Test (Chlorine)

11,69 - 11,69
11,69
11,69
11,69 - 11,69
11,69
3 in stock

For the simple determination of the chlorine content in fresh and sea water

Sera O2-Test (Zuurstof)

Sera O2 Test (Oxygen)

16,49 - 16,49
16,49
16,49
16,49 - 16,49
16,49
2 in stock

For the simple determination of the oxygen content in fresh water Rapid breathing at the water surface is an unmistakable sign of oxygen deficie...

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Sera Cu-Test (Koper)
Save 11% Save %

Sera Cu-Test (Copper)

16,89
16,89 - 16,89
16,89
14,99
14,99 - 14,99
14,99
3 in stock

For the simple determination of the copper content in fresh and sea water Copper (Cu) is very toxic for invertebrates such as shrimps and crayf...

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Most strips can measure the following water values: PH (acidity), GH (general hardness), KH (carbonate hardness), NO2 (nitrite), NO3 (nitrate) and CL2 (chlorine).

With a drop test you can also test the NH3 (ammonia), NH4 (ammonium), PO4 (phosphate) and FE (iron) values.

For example, a pH that is too high causes NH4 (ammonium) to convert more quickly into NH3 (ammonia), which is harmful to your fish.

If the water values ​​are too high, a water change and less feeding is the solution in most cases.
When changing the water in this situation, make sure that the values ​​do not change too quickly. Add clean water in stages so that the plants and fish can get used to it gradually.

Are the water values ​​too low? Then fertilization is in most cases the solution.