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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 provides a fast and effective way to test your aquarium water and can be... £9.29

API 5 in 1 Aquarium Test Strips

The API 5 in 1 Aquarium Test Strip provides a fast and effective way to test your aquarium water and can be...

1 Review
In stock RRP £11.99 Save £2.70 £9.29 View
API
API Ammonia Aquarium Test Strips http://www.swelluk.com/img/shop/thumb/ammoniastrip.jpg The API Ammonia Aquarium Test Strip is a quick and precise way of testing the Ammonia levels within your pond.... £8.99

API Ammonia Aquarium Test Strips

The API Ammonia Aquarium Test Strip is a quick and precise way of testing the Ammonia levels within your pond....

0 Reviews
In stock RRP £11.65 Save £2.66 £8.99 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. It includes detailed instructions on how to... £8.59

API Calcium Test Kit

The API Calcium Test Kit is ideal for use in reef aquariums. It includes detailed instructions on how to...

0 Reviews
In stock RRP £11.65 Save £3.06 £8.59 View
API
API Copper Test Kit http://www.swelluk.com/img/shop/thumb/coppertest.jpg The API Copper Test Kit is a user friendly but thorough way to test your marine and freshwater tanks copper... £9.29

API Copper Test Kit

The API Copper Test Kit is a user friendly but thorough way to test your marine and freshwater tanks copper...

0 Reviews
In stock RRP £11.65 Save £2.36 £9.29 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.... £5.43

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....

0 Reviews
In stock RRP £7.15 Save £1.72 £5.43 View
API
API Liquid Freshwater Master Test Kit http://www.swelluk.com/img/shop/thumb/freshwatertest_image-1.jpg The Liquid Freshwater Master Test Kit is now available from Swell UK, a Leading Online Retailer of Aquarium... £24.49

API Liquid Freshwater Master Test Kit

The Liquid Freshwater Master Test Kit is now available from Swell UK, a Leading Online Retailer of Aquarium...

2 Reviews
In stock RRP £35.69 Save £11.20 £24.49 View
API
API Liquid Saltwater Master Test Kit http://www.swelluk.com/img/shop/thumb/saltwatertestkit_image-1.jpg API Liquid Saltwater Master Test Kits are now available from Swell UK, a Leading Online Retailer of Aquarium... £20.49

API Liquid Saltwater Master Test Kit

API Liquid Saltwater Master Test Kits are now available from Swell UK, a Leading Online Retailer of Aquarium...

0 Reviews
In stock RRP £29.59 Save £9.10 £20.49 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 saltwater, or... £9.49

API Nitrate Test Kit

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

0 Reviews
In stock RRP £11.65 Save £2.16 £9.49 View
API
API Nitrite Test Kit http://www.swelluk.com/img/shop/thumb/nitritetest.jpg The API Nitrite Test Kit includes a detailed colour chart and instructions to help perform easy and precise... £9.09

API Nitrite Test Kit

The API Nitrite Test Kit includes a detailed colour chart and instructions to help perform easy and precise...

0 Reviews
In stock RRP £11.25 Save £2.16 £9.09 View
API
API pH Test Strips http://www.swelluk.com/img/shop/thumb/APIpH.jpg The API Aquarium pH Test Strips are an easy and clear way of testing your aquarium waters pH level. Each... £6.99

API pH Test Strips

The API Aquarium pH Test Strips are an easy and clear way of testing your aquarium waters pH level. Each...

0 Reviews
In stock RRP £8.79 Save £1.80 £6.99 View
API
API Phosphate Test Kit http://www.swelluk.com/img/shop/thumb/ptest.jpg The API Phosphate Test Kit is the highly precise and easy way to test your aquariums phosphate levels. This... £9.49

API Phosphate Test Kit

The API Phosphate Test Kit is the highly precise and easy way to test your aquariums phosphate levels. This...

0 Reviews
In stock RRP £11.65 Save £2.16 £9.49 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 available from Swell UK, measures the most important aquarium levels. This kit tests... £24.99

API Reef Master Test Kit

API Reef Master Test Kit available from Swell UK, measures the most important aquarium levels. This kit tests...

0 Reviews
In stock RRP £35.69 Save £10.70 £24.99 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... £1.49

API Tap Water Conditioner

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

1 Review
From £1.49 View
Aqua Medic
Aqua Medic Salimeter http://www.swelluk.com/img/shop/thumb/Marine-Hydrometers-and-Test-Kits-Aqua-Medic-salimeter.jpg Salimeter is available from Swell UK.Precision hydrometer and thermometer for saltwater aquariums.Salimeter is... £6.49

Aqua Medic Salimeter

Salimeter is available from Swell UK.Precision hydrometer and thermometer for saltwater aquariums.Salimeter is...

0 Reviews
In stock RRP £6.65 Save £0.16 £6.49 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... £12.99

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 £5.00 £12.99 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.... £15.49

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 £5.50 £15.49 View
Aquarium Systems
Aquarium Systems SeaTest - GH Test Kit http://www.swelluk.com/img/shop/thumb/seatest_GH1.jpeg Test kit by Aquarium systems for measuring the total hardness of your tropical or cold freshwater aquarium.... £9.29

Aquarium Systems SeaTest - GH Test Kit

Test kit by Aquarium systems for measuring the total hardness of your tropical or cold freshwater aquarium....

0 Reviews
In stock RRP £12.49 Save £3.20 £9.29 View
Aquarium Systems
Aquarium Systems SeaTest - KH Test Kit http://www.swelluk.com/img/shop/thumb/seatest_KH1.jpeg Aquarium System's Seatest KH, or buffering capacity, test kit, comprising x2 10ml carbonate hardness indicator... £9.99

Aquarium Systems SeaTest - KH Test Kit

Aquarium System's Seatest KH, or buffering capacity, test kit, comprising x2 10ml carbonate hardness indicator...

0 Reviews
In stock RRP £13.49 Save £3.50 £9.99 View
Aquarium Systems
Aquarium Systems SeaTest - Magnesium Test Kit http://www.swelluk.com/img/shop/thumb/seatest_magnsium1.jpeg The Seatest Magnesium (Mg) test kit from Aquarium Systems contains approximately 40 individual tests, allowing... £15.49

Aquarium Systems SeaTest - Magnesium Test Kit

The Seatest Magnesium (Mg) test kit from Aquarium Systems contains approximately 40 individual tests, allowing...

0 Reviews
In stock RRP £20.99 Save £5.50 £15.49 View
Aquarium Systems
Aquarium Systems SeaTest - Nitrate Test Kit http://www.swelluk.com/img/shop/thumb/seatest_nitrate1.jpeg Ensuring nitrate (NO3) levels in your aquarium remain within normal limits is essential for fish health, and to... £12.99

Aquarium Systems SeaTest - Nitrate Test Kit

Ensuring nitrate (NO3) levels in your aquarium remain within normal limits is essential for fish health, and to...

0 Reviews
In stock RRP £17.99 Save £5.00 £12.99 View
Aquarium Systems
Aquarium Systems SeaTest - Nitrite Test Kit http://www.swelluk.com/img/shop/thumb/seatest_nitrite1.jpeg Use Seatest's NO2 (nitrite) test kit to monitor and adjust levels of nitrites in your aquarium water, thereby... £12.99

Aquarium Systems SeaTest - Nitrite Test Kit

Use Seatest's NO2 (nitrite) test kit to monitor and adjust levels of nitrites in your aquarium water, thereby...

0 Reviews
In stock RRP £17.99 Save £5.00 £12.99 View
Aquarium Systems
Aquarium Systems SeaTest - PH Test Kit http://www.swelluk.com/img/shop/thumb/seatest_PH1.jpeg Water quality is an important part of pond and aquarium keeping. One of the most crucial things to test in... £9.29

Aquarium Systems SeaTest - PH Test Kit

Water quality is an important part of pond and aquarium keeping. One of the most crucial things to test in...

0 Reviews
In stock RRP £12.49 Save £3.20 £9.29 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... £15.49

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 £5.50 £15.49 View
Aquarium Systems
Aquarium Systems SeaTest - System Control http://www.swelluk.com/img/shop/thumb/seatest_control_system1.jpeg The Seatest System Control is designed to be used in conjunction with Seatest's full range of test kits,... £87.99

Aquarium Systems SeaTest - System Control

The Seatest System Control is designed to be used in conjunction with Seatest's full range of test kits,...

0 Reviews
In stock RRP £92.99 Save £5.00 £87.99 View
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