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Test Kits

Test Kits

At Swell UK we sell a wide range of tank test kits which are great for keeping an eye on the water quality in your aquarium.

When keeping fish, there are certain chemicals which can have negative effects on the health of your tank inhabitants.

One of the most common problems for fish keepers is algae, the dreaded green stuff which thrives on light, waste and water, spreading like wildfire in your aquarium. It is easier to tackle if you catch it in its early stages, which is where test kits can come in handy. It can be worthwhile to keep a selection of kits in your aquarium cabinet such as Ammonia test strips or Phosphate test kits , which will let you know if certain algae-feeding chemicals are present allowing you to take action and starve the algae out.

If the results show signs of ammonia, phosphate or other undesirable chemicals, then it can be worth trying appropriate treatments or additives to solve the problem quickly.

Swell UK know you want to take good care of your tank. That's why we offer Next Working Day Delivery options on test kits marked as In Stock.

Order before 3pm weekdays to take advantage of Same-Day Despatch!

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API
API 5 in 1 Aquarium Test Strips http://www.swelluk.com/img/shop/thumb/5in1.jpg The API 5 in 1 Aquarium Test Strip is a quick and easy way to test the water in your aquarium for five... £6.89

API 5 in 1 Aquarium Test Strips

The API 5 in 1 Aquarium Test Strip is a quick and easy way to test the water in your aquarium for five...

0 Reviews
In stock RRP £11.99 Save £5.10 £6.89 View
API
API Ammonia Aquarium Test Strips http://www.swelluk.com/img/shop/thumb/ammoniastrip.jpg The API Ammonia Aquarium Test Strip contains 25 test strips to quickly determine the level of ammonia within... £7.83

API Ammonia Aquarium Test Strips

The API Ammonia Aquarium Test Strip contains 25 test strips to quickly determine the level of ammonia within...

0 Reviews
In stock RRP £11.65 Save £3.82 £7.83 View
API
API Calcium Test Kit http://www.swelluk.com/img/shop/thumb/calc1.jpg The API Calcium Test Kit is ideal for use in reef aquariums. Corals, crutaceans and invertebrates take calcium... £7.85

API Calcium Test Kit

The API Calcium Test Kit is ideal for use in reef aquariums. Corals, crutaceans and invertebrates take calcium...

0 Reviews
In stock RRP £11.65 Save £3.80 £7.85 View
API
API Copper Test Kit http://www.swelluk.com/img/shop/thumb/coppertest.jpg The API Copper Test Kit is easy to use and will allow you to monitor safe levels of copper within your... £6.38

API Copper Test Kit

The API Copper Test Kit is easy to use and will allow you to monitor safe levels of copper within your...

0 Reviews
In stock RRP £11.65 Save £5.27 £6.38 View
API
API High Range pH Test Kit http://www.swelluk.com/img/shop/thumb/highph.jpg The API High pH Test Kit comes from an advanced range of test kit that are known for precision and ease of use.... £4.89

API High Range pH Test Kit

The API High pH Test Kit comes from an advanced range of test kit that are known for precision and ease of use....

2 Reviews
In stock RRP £7.15 Save £2.26 £4.89 View
API
API Liquid Freshwater Master Test Kit http://www.swelluk.com/img/shop/thumb/freshwatertest_image-1.jpg The API Liquid Freshwater Master Test Kit  is ideal to monitor the level of 5 different elements within your... £19.89

API Liquid Freshwater Master Test Kit

The API Liquid Freshwater Master Test Kit  is ideal to monitor the level of 5 different elements within your...

0 Reviews
In stock RRP £35.69 Save £15.80 £19.89 View
API
API Liquid Saltwater Master Test Kit http://www.swelluk.com/img/shop/thumb/saltwatertestkit_image-1.jpg API Liquid Saltwater Master Test Kit is perfect to monitor the levels of four problem pollutants or levels in... £16.20

API Liquid Saltwater Master Test Kit

API Liquid Saltwater Master Test Kit is perfect to monitor the levels of four problem pollutants or levels in...

1 Review
In stock RRP £29.59 Save £13.39 £16.20 View
API
API Nitrate Test Kit http://www.swelluk.com/img/shop/thumb/ntk.jpg The API Nitrate Test Kit is the precise and easy way of testing the nitrate levels within your salt or... £8.05

API Nitrate Test Kit

The API Nitrate Test Kit is the precise and easy way of testing the nitrate levels within your salt or...

3 Reviews
In stock RRP £11.65 Save £3.60 £8.05 View
API
API Nitrite Test Kit http://www.swelluk.com/img/shop/thumb/nitritetest.jpg Nitrites are formed as ammonia is broken down. Toxic and potentially lethal to fish, they can quickly pollute... £7.61

API Nitrite Test Kit

Nitrites are formed as ammonia is broken down. Toxic and potentially lethal to fish, they can quickly pollute...

0 Reviews
In stock RRP £11.25 Save £3.64 £7.61 View
API
API pH Test Strips http://www.swelluk.com/img/shop/thumb/APIpH.jpg The API Aquarium pH Test Strips are a quick and simple way to monitor the pH level of your aquarium.  Simply... £5.93

API pH Test Strips

The API Aquarium pH Test Strips are a quick and simple way to monitor the pH level of your aquarium.  Simply...

0 Reviews
In stock RRP £8.79 Save £2.86 £5.93 View
API
API Phosphate Test Kit http://www.swelluk.com/img/shop/thumb/ptest.jpg The API Phosphate Test Kit is simple and easy to use. Phosphates can be a real problem if levels get too high,... £7.95

API Phosphate Test Kit

The API Phosphate Test Kit is simple and easy to use. Phosphates can be a real problem if levels get too high,...

0 Reviews
In stock RRP £11.65 Save £3.70 £7.95 View
API
API Reef Master Test Kit http://www.swelluk.com/img/shop/thumb/api_reef_master_test_kit.jpg API Reef Master Test Kit tests for four important factors in a reef aquarium: Calcium. Carbonate Hardness... £19.89

API Reef Master Test Kit

API Reef Master Test Kit tests for four important factors in a reef aquarium: Calcium. Carbonate Hardness...

1 Review
In stock RRP £35.69 Save £15.80 £19.89 View
API
API Tap Water Conditioner http://www.swelluk.com/img/shop/thumb/twc.jpg The API Tap Water Conditioner is a highly effective water conditioner that will instantly remove the chlorine... £1.24

API Tap Water Conditioner

The API Tap Water Conditioner is a highly effective water conditioner that will instantly remove the chlorine...

3 Reviews
From £1.24 View
Aqua Medic
Aqua Medic Refractometer http://www.swelluk.com/img/shop/thumb/aqua-medic_refractometer.jpg The Aqua Medic Refractometer is a precise instrument which will determine the salinity of salt water quickly... £72.00

Aqua Medic Refractometer

The Aqua Medic Refractometer is a precise instrument which will determine the salinity of salt water quickly...

0 Reviews
In stock RRP £89.80 Save £17.80 £72.00 View
Aqua Medic
Aqua Medic Salimeter http://www.swelluk.com/img/shop/thumb/Marine-Hydrometers-and-Test-Kits-Aqua-Medic-salimeter.jpg The Aqua Medic Salimeter is a precision hydrometer and thermometer for saltwater aquariums. Aqua Medic are... £5.84

Aqua Medic Salimeter

The Aqua Medic Salimeter is a precision hydrometer and thermometer for saltwater aquariums. Aqua Medic are...

1 Review
In stock RRP £6.65 Save £0.81 £5.84 View
Aquarium Systems
Aquarium Systems SeaTest - Ammonia Test Kit http://www.swelluk.com/img/shop/thumb/seatest_ammonia1.jpeg The Seatest Ammonia test contains approximately 40 tests for the presence of NH4, or ammonium compounds, in... £9.90

Aquarium Systems SeaTest - Ammonia Test Kit

The Seatest Ammonia test contains approximately 40 tests for the presence of NH4, or ammonium compounds, in...

0 Reviews
In stock RRP £17.99 Save £8.09 £9.90 View
Aquarium Systems
Aquarium Systems SeaTest - Calcium Test Kit http://www.swelluk.com/img/shop/thumb/seatest_calcium1.jpeg Seatest's calcium test kit comprises approx. 40 individual tests for calcium (Ca) levels within the aquarium.... £11.70

Aquarium Systems SeaTest - Calcium Test Kit

Seatest's calcium test kit comprises approx. 40 individual tests for calcium (Ca) levels within the aquarium....

0 Reviews
In stock RRP £20.99 Save £9.29 £11.70 View
Aquarium Systems
Aquarium Systems SeaTest - GH Test Kit http://www.swelluk.com/img/shop/thumb/seatest_GH1.jpeg Measuring the water hardness in your aquarium is vital to maintain the correct balance. The Aquarium Systems... £7.20

Aquarium Systems SeaTest - GH Test Kit

Measuring the water hardness in your aquarium is vital to maintain the correct balance. The Aquarium Systems...

0 Reviews
In stock RRP £12.49 Save £5.29 £7.20 View
Aquarium Systems
Aquarium Systems SeaTest - KH Test Kit http://www.swelluk.com/img/shop/thumb/seatest_KH1.jpeg Aquarium System's Seatest KH is ideal to test the carbonate hardness of your aquarium. The carbonate hardness... £8.50

Aquarium Systems SeaTest - KH Test Kit

Aquarium System's Seatest KH is ideal to test the carbonate hardness of your aquarium. The carbonate hardness...

0 Reviews
In stock RRP £13.49 Save £4.99 £8.50 View
Aquarium Systems
Aquarium Systems SeaTest - Magnesium Test Kit http://www.swelluk.com/img/shop/thumb/seatest_magnsium1.jpeg Aquarium System's Sea Test Magnesium Test Kit is ideal to correctly test the amount of magnesium in reef tank... £11.70

Aquarium Systems SeaTest - Magnesium Test Kit

Aquarium System's Sea Test Magnesium Test Kit is ideal to correctly test the amount of magnesium in reef tank...

0 Reviews
In stock RRP £20.99 Save £9.29 £11.70 View
Aquarium Systems
Aquarium Systems SeaTest - Nitrate Test Kit http://www.swelluk.com/img/shop/thumb/seatest_nitrate1.jpeg Nitrate is an unwelcome visitor in any aquarium, as it can cause excessive algae growth and can damage fish... £9.90

Aquarium Systems SeaTest - Nitrate Test Kit

Nitrate is an unwelcome visitor in any aquarium, as it can cause excessive algae growth and can damage fish...

0 Reviews
In stock RRP £17.99 Save £8.09 £9.90 View
Aquarium Systems
Aquarium Systems SeaTest - Nitrite Test Kit http://www.swelluk.com/img/shop/thumb/seatest_nitrite1.jpeg Aquarium System's Sea Test Nitrite Test Kit will enable you to test for nitrites efficiently and accurately.... £9.90

Aquarium Systems SeaTest - Nitrite Test Kit

Aquarium System's Sea Test Nitrite Test Kit will enable you to test for nitrites efficiently and accurately....

0 Reviews
In stock RRP £17.99 Save £8.09 £9.90 View
Aquarium Systems
Aquarium Systems SeaTest - PH Test Kit http://www.swelluk.com/img/shop/thumb/seatest_PH1.jpeg Part of Aquarium System's excellent range of Sea Tests, this pH Test Kit contains everything you need to make... £7.20

Aquarium Systems SeaTest - PH Test Kit

Part of Aquarium System's excellent range of Sea Tests, this pH Test Kit contains everything you need to make...

0 Reviews
In stock RRP £12.49 Save £5.29 £7.20 View
Aquarium Systems
Aquarium Systems SeaTest - Phosphate Test Kit http://www.swelluk.com/img/shop/thumb/seatest_phosphate1.jpeg Phosphate is an end product of the decomposition of organic material such as fish waste, plant material and... £11.70

Aquarium Systems SeaTest - Phosphate Test Kit

Phosphate is an end product of the decomposition of organic material such as fish waste, plant material and...

0 Reviews
In stock RRP £20.99 Save £9.29 £11.70 View
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