25 Best PO4 Test Kits
for March 2021

Recommendations are independently chosen by MOOZ’s editors. Purchases you make through our links may earn us a commission.

1
9.9
SCORE
Red Sea MCP Phosphate (PO4) Test Kit - Saltwater Aquariums, Packing may vary

Red Sea MCP Phosphate (PO4) Test Kit

Saltwater Aquariums, Packing may vary

by Red Sea
What We like

Age Range Description: All Stages

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Product Features

  • Country of Origin: CHINA
  • For Saltwater/Reef/Marine Aquariums Only.
  • Measurement of Phosphate in your aquarium to an accuracy of 0. 1ppm PO4.
  • Red Sea Phosphate Test Kit Includes 100 tests.

For saltwater/reef/marine aquariums only. Country of origin: china Red Sea phosphate test kit includes 100 tests. Measurement of phosphate in your aquarium to an accuracy of 0. 1ppm po4.

2
9.7
SCORE
Red Sea Algae Control Kit with NO3:PO4-X Phosphate Reducer & Algae Control Test Kit Bundle

Red Sea Algae Control Kit with NO3:PO4-X Phosphate Reducer & Algae Control Test Kit Bundle

by Red Sea
What We like

Red Sea NO3:PO4-X is a liquid (16.9 fl. oz). The recommended daily dosage is 1 to 3 ml per 100 liters (gallons) of water. The 3 ml daily dosage is for tanks with NO3 (nitrate) above 10 ppm.

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Product Features

  • Red Sea's Algae Control kit includes high accuracy colorimetric tests for the exceptionally high accuracy measurement of Nitrate and Phosphate. The Nitrate & Phosphate tests are essential for the accurate dosing of Red Sea's NO3: PO4-X Nitrate & Phosphate reducer. 100 test of both the Nitrate and Phosphate.
  • Red Sea NO3:PO4-X prevents nuisance algae and enables the control of zooxanthellae for optimum coral growth and coloration. This biological nitrate and phosphate reducer contains a unique complex of carbons that are used by nutrient-reducing bacteria. Each carbon is utilized by different strains of microorganisms while maintaining the specific Carbon: Nitrogen: Phosphorus ratio required for each stage.
  • Do you have an algae bloom? With the Red Sea Algae Control Test Kit you can determine if the problem is caused by algae or nitrate. With the Red Sea NO3:PO4-X, Biological Nitrate and Phosphate Reducer 16.9 fl oz you can significantly reduce the algae by using a unique complex of carbons to feed nutrient-reducing bacteria.

Red Sea no3:po4-x prevents nuisance algae and enables the control of zooxanthellae for optimum coral growth and coloration. this biological nitrate and phosphate reducer contains a unique complex of carbons that are used by nutrient-reducing bacteria. each carbon is utilized by different strains of microorganisms while maintaining the specific carbon: nitrogen: phosphorus ratio required for each stage. Red Sea's algae control kit includes high accuracy colorimetric tests for the exceptionally high accuracy measurement of nitrate and phosphate. the nitrate & phosphate tests are essential for the accurate dosing of Red Sea's no3: po4-x nitrate & phosphate reducer. 100 test of both the nitrate and phosphate. Do you have an algae bloom? with the Red Sea algae control test kit you can determine if the problem is caused by algae or nitrate. with the Red Sea no3:po4-x, biological nitrate and phosphate reducer 16.9 fl oz you can significantly reduce the algae by using a unique complex of carbons to feed nutrient-reducing bacteria.

3
9.6
SCORE
Aquaforest Phosphate PO4 Test Kit

Aquaforest Phosphate PO4 Test Kit

by Aquaforest
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4
9.6
SCORE
NYOS Phosphate (PO4) Reefer Aquarium Test Kit

NYOS Phosphate (PO4) Reefer Aquarium Test Kit

by NYOS
What We like

50 Tests - NYOS REEFER test kits allows you to achieve precise and most importantly reproducible (i.e. in repeat measurements identical) measuring results.

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Product Features

  • Measurement Range: 0.0251.0 mg/l PO4
  • Reagents are made in Germany in accordance with EN ISO 9001, AAS and NIST standards.
  • Made in Germany

Reagents are made in germany in accordance with en iso 9001, aas and nist standards. Made in germany Measurement range: 0.0251.0 mg/l po4

5
9.6
SCORE
Sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits

Sera Phosphate-Test (PO4) 15 ml

0.5 fl.oz. Aquarium Test Kits

by Sera North America, Inc.
What We like

Easy to read

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Product Features

  • Very accurate
  • For freshwater and marine aquariums as well as ponds

Very accurate For freshwater and marine aquariums as well as ponds

6
9.5
SCORE
Red Sea Phosphate/PO4 Pro Test Kit - 100 Tests

Red Sea Phosphate/PO4 Pro Test Kit

100 Tests

by Red Sea
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7
9.5
SCORE
Red Test Kit Phosphate Pro Po4

Red Sea Fish Pharm Ltd. Red Test Kit Phosphate Pro Po4

by RED SEA FISH PHARM LTD.
What We like

Phosphate Pro (po4) Salt Water Test Kit

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8
9.4
SCORE
Colombo Pond PO4 Test Kit (One Size) (May Vary)

Colombo Pond PO4 Test Kit (One Size) (May Vary)

by Colombo
What We like

Contains 40 tests.

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Product Features

  • Accurately measures phosphate in pond water.

Accurately measures phosphate in pond water.

9
9.3
SCORE
Salifert Phosphate Test Kit

Salifert Phosphate Test Kit

by Deepwater Aquatics Distribution
What We like

The phosphate test kit includes a professional colorimetric comparator

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Product Features

  • The phosphate test is highly reliable and accurate
  • The phosphate test kit will detect lower concentrations of phosphates

The phosphate test kit will detect lower concentrations of phosphates The phosphate test is highly reliable and accurate

10
9.3
SCORE
Seachem MultiTest Phosphate Test Kit

Seachem MultiTest Phosphate Test Kit

by Seachem Laboratories, Inc.
What We like

Unique indicator

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Product Features

  • Fresh or saltwater use
  • 75 test

75 test Fresh or saltwater use

11
9.3
SCORE
Red Sea Fish Pharm ARE21525 Marine Care Test Kit for Aquarium

Red Sea Fish Pharm ARE21525 Marine Care Test Kit for Aquarium

by TopDawg Pet Supply
What We like

Allowing you to easily monitor the nitrate, nitrite, ammonia, pH and alkalinity levels

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Product Features

  • 100 Ammonia test with accuracy of 0. 02 ppm, 100 and 60 nitrate test with accuracy of 2 ppm and 0. 05 ppm
  • 100 pH test with accuracy of 0. 2 ppm, 55 alkalinity test with accuracy of 1 dKH/0. 36 meq/L
  • Marine care test kit includes all of the main kits you need to run a healthy marine aquarium
  • The easy-to-use tests come with simple instructions and color charts

100 ph test with accuracy of 0. 2 ppm, 55 alkalinity test with accuracy of 1 dkh/0. 36 meq/l The easy-to-use tests come with simple instructions and color charts Marine care test kit includes all of the main kits you need to run a healthy marine aquarium 100 ammonia test with accuracy of 0. 02 ppm, 100 and 60 nitrate test with accuracy of 2 ppm and 0. 05 ppm

12
9
SCORE
API Phosphate Test Kit For Freshwater And Saltwater

API Phosphate Test Kit For Freshwater And Saltwater

by Aquarium Pharmaceuticals
What We like

Easy to read test kit

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Product Features

  • High phosphate leads to algae growth
  • For fresh and saltwater

High phosphate leads to algae growth For fresh and saltwater

13
8.9
SCORE
Triton Labs ICP-OES Water Test- Full Panel of 32 Elements - Saltwater Reef Testing Kit

Triton Labs ICP-OES Water Test- Full Panel of 32 Elements

Saltwater Reef Testing Kit

by Triton Labs
What We like

The results of this test provide you with the most detailed analysis of marine aquarium water you've ever seen, enabling you to understand exactly what's missing, what's excessive, and what to do about it.

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Product Features

  • Testing Elements Include: Na, Ca, Mg, K, Sr, B, Br, S, Li, Be, Ba, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Si, As, Sb, Sn, Cd, Se, Mo, Hg, P (PO4), Pb, I.

Testing elements include: na, ca, mg, k, sr, b, br, s, li, be, ba, ti, v, cr, mn, fe, co, ni, cu, zn, al, si, as, sb, sn, cd, se, mo, hg, p (po4), pb, i.

14
8.9
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Red Sea Fish Pharm ARE21426 Reagent Phosphate Pro Refill Kit for Aquarium, 100 Tests

Red Sea Fish Pharm Ltd. Red Sea Fish Pharm ARE21426 Reagent Phosphate Pro Refill Kit for Aquarium

100 Tests

by TopDawg Pet Supply
What We like

This kit includes a durable, chemical resistant plastic case, analytical grade glass vials

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Product Features

  • Includes material for up to 100 tests
  • Measuring the level of phosphate in reef aquarium to an exceptionally high accuracy of 0. 02ppm PO4
  • Phosphate Pro refill kit is an advanced colorimetric test with comparator
  • This test kit, when used in conjunction with the nitrate Pro test kit, enables accurate dosing of NO3: po4-x (biological nitrate and Phosphate reducer)

Measuring the level of phosphate in reef aquarium to an exceptionally high accuracy of 0. 02ppm po4 This test kit, when used in conjunction with the nitrate pro test kit, enables accurate dosing of no3: po4-x (biological nitrate and phosphate reducer) Includes material for up to 100 tests Phosphate pro refill kit is an advanced colorimetric test with comparator

15
8.6
SCORE
Red Sea Fish Pharm ARE21520 Algae Control Multi Salt Water Test Kit for Aquarium

Red Sea Fish Pharm ARE21520 Algae Control Multi Salt Water Test Kit for Aquarium

by TopDawg Pet Supply
What We like

The kit also includes a durable, chemical resistant plastic case and analytical grade glass vials

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Product Features

  • Ease-of-use rewards new and experienced reef hobbyists with fast and accurate results
  • The nitrate and phosphate tests are essential for the accurate dosing of NO3: PO4-X biological nitrate and phosphate reducer
  • Algae control test kit includes high accuracy colorimetric comparator tests for the exceptionally high accuracy measurement of nitrate and phosphate
  • Multi test kit employs a comparator that eliminates fumbling or awkward handling of test vials also difficult to match color charts or color chips

Ease-of-use rewards new and experienced reef hobbyists with fast and accurate results The nitrate and phosphate tests are essential for the accurate dosing of no3: po4-x biological nitrate and phosphate reducer Algae control test kit includes high accuracy colorimetric comparator tests for the exceptionally high accuracy measurement of nitrate and phosphate Multi test kit employs a comparator that eliminates fumbling or awkward handling of test vials also difficult to match color charts or color chips

16
8.6
SCORE
Red Sea Fish Pharm ARE21425 Saltwater Phosphate Pro Test Kit for Aquarium, 100 Tests

Red Sea Fish Pharm ARE21425 Saltwater Phosphate Pro Test Kit for Aquarium

100 Tests

by TopDawg Pet Supply
What We like

This kit includes a durable, chemical resistant plastic case, analytical grade glass vials

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Product Features

  • This test kit, when used in conjunction with the nitrate pro test kit, enables accurate dosing of NO3: PO4-X (biological nitrate and phosphate reducer)
  • Phosphate pro test kit is an advanced colorimetric test with comparator
  • Includes material for up to 100 tests
  • Measuring the level of phosphate in reef aquarium to an exceptionally high resolution of 0. 014 ppm P-PO4

Includes material for up to 100 tests This test kit, when used in conjunction with the nitrate pro test kit, enables accurate dosing of no3: po4-x (biological nitrate and phosphate reducer) Measuring the level of phosphate in reef aquarium to an exceptionally high resolution of 0. 014 ppm p-po4 Phosphate pro test kit is an advanced colorimetric test with comparator

17
8.5
SCORE
rikka Magnesium Saltwater Test Kit High Accuracy Titration Test kit More Than 60 Tests

rikka Magnesium Saltwater Test Kit High Accuracy Titration Test kit More Than 60 Tests

by rikka
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18
8.5
SCORE
Red Sea Fish Pharm ARE22210 Reef Mature Pro Test Kit for Aquarium

Red Sea Fish Pharm Ltd. Red Sea Fish Pharm ARE22210 Reef Mature Pro Test Kit for Aquarium

by TopDawg Pet Supply
What We like

Reef mature pro kit provides a complete program for the biological maturation of your reef aquarium

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Product Features

  • Establishing full nitrification plus nitrate and phosphate reduction in a few weeks
  • Treats 250 liters
  • By using Red Sea's complete marine care test kit, you can monitor all essential water parameters during maturation
  • Reef Mature Pro kit includes Bacto Start, Nitro Back, NO3: PO4-X and KH Coralline Grow

By using red sea's complete marine care test kit, you can monitor all essential water parameters during maturation Establishing full nitrification plus nitrate and phosphate reduction in a few weeks Reef mature pro kit includes bacto start, nitro back, no3: po4-x and kh coralline grow Treats 250 liters

19
8.3
SCORE
SeaVisions 2-Sample Comprehensive Water Test Kit, Testing Kits for Drinking Water, Saltwater, or Freshwater Aquarium

SeaVisions of South Florida SeaVisions 2-Sample Comprehensive Water Test Kit

Testing Kits for Drinking Water, Saltwater, or Freshwater Aquarium

by SeaVisions of South Florida
What We like

State-of-the-art South Florida facility analyzes tests for optimal water parameters and provides guidance for aquarium issues

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Product Features

  • Results and analysis are made available online within two days of arrival at the lab along with ability to speak with a lab technician directly about the results
  • 80 lab tests performed with the water safe test kit, including measurement of key elements, nutrient panel, salinity, and more
  • Simply collect up to two different samples and send them for analysis with the included FedEx 2-day shipping label
  • Spectro Arcos ICP-OES and Nutrient Panel by discrete analysis for Aquariums, Drinking Water, Saltwater, and Freshwater samples

Spectro arcos icp-oes and nutrient panel by discrete analysis for aquariums, drinking water, saltwater, and freshwater samples 80 lab tests performed with the water safe test kit, including measurement of key elements, nutrient panel, salinity, and more Simply collect up to two different samples and send them for analysis with the included fedex 2-day shipping label Results and analysis are made available online within two days of arrival at the lab along with ability to speak with a lab technician directly about the results

20
7.6
SCORE
Nutrafin Mini Master Test Kit, Contains 4 Test Parameters

Nutrafin Mini Master Test Kit

Contains 4 Test Parameters

by Nutrafin
What We like

For freshwater aquariums; Full instructions for each test

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Product Features

  • Mini Master Test Kit; Ensures your fish are living a proper environment
  • Essential for maintaining water quality and condition
  • Includes test reagents for: pH wide range; Ammonia; Nitrate; Nitrite

Essential for maintaining water quality and condition Mini master test kit; ensures your fish are living a proper environment Includes test reagents for: ph wide range; ammonia; nitrate; nitrite

21
7.5
SCORE
Red Sea Phosphate Pro Test Kit Reagent Refill

Red Sea Phosphate Pro Test Kit Reagent Refill

by Red Sea
What We like

Note: We can not ship this Test Kit expedited or to Hawaii, Alaska or Puerto Rico

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Product Features

  • It includes enough reagents for 100 tests.

It includes enough reagents for 100 tests.

22
7.4
SCORE
Red Sea Fish Pharm ARE21421 Reagent Nitrate Pro Refill Kit for Aquarium, 100 Tests

Red Sea Fish Pharm Ltd. Red Sea Fish Pharm ARE21421 Reagent Nitrate Pro Refill Kit for Aquarium

100 Tests

by TopDawg Pet Supply
What We like

This kit features a durable chemical resistant plastic case and analytical grade glass vials

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Product Features

  • Measuring the level of nitrate in your reef aquarium to an exceptionally high resolution of 0.06 ppm N-NO3
  • Nitrate pro refill kit is an advanced colorimetric test with comparator
  • This refill kit, when used in conjunction with the phosphate pro kit, enables accurate dosing of NO3:PO4-X (biological nitrate and phosphate reducer)

This refill kit, when used in conjunction with the phosphate pro kit, enables accurate dosing of no3:po4-x (biological nitrate and phosphate reducer) Measuring the level of nitrate in your reef aquarium to an exceptionally high resolution of 0.06 ppm n-no3 Nitrate pro refill kit is an advanced colorimetric test with comparator

23
7.4
SCORE
Dajana PH Test Kit 10 ml. 50 Test, pH Level Test kit Aquarium & Pond Water

Dajana PH Test Kit 10 ml. 50 Test

pH Level Test kit Aquarium & Pond Water

by Dajana
What We like

Detailed information and instructions for use are to be found on the instruction slip inside the box.

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Product Features

  • pH Test Kit for Aquariums & Ponds 10 ml, about 50 tests
  • Testing procedure: 1. Attach the enclosed scoop to the tank and collect 3 ml of water for testing 2. Hold the test solution vial vertically above the measuring cup and pour in into water 7 drops of solution 3. Displace the water with the solution in a measuring cup 4. Immediately compare the color of the solution with the color swatch and subtract the corresponding pH value. Move the color scale in front of the vial and look for the color matching in the visor to determine the pH value.
  • Test kit is intended for the precise determination of the pH value in your aquarium or garden pond. for fresh water or marine (salt) water in the aquarium

Testing procedure: 1. attach the enclosed scoop to the tank and collect 3 ml of water for testing 2. hold the test solution vial vertically above the measuring cup and pour in into water 7 drops of solution 3. displace the water with the solution in a measuring cup 4. immediately compare the color of the solution with the color swatch and subtract the corresponding ph value. move the color scale in front of the vial and look for the color matching in the visor to determine the ph value. Test kit is intended for the precise determination of the ph value in your aquarium or garden pond. for fresh water or marine (salt) water in the aquarium Ph test kit for aquariums & ponds 10 ml, about 50 tests

24
7.4
SCORE
Total Alkalinity Test Kit,20-240 mg/L

LOVIBOND Total Alkalinity Test Kit

20-240 mg/L

by LOVIBOND
What We like

Replacement Reagents: RT320-0

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Product Features

  • Test System: Visual Continuous Color Disk
  • Item: Water Quality Test Kit
  • Number of Tests: 100
  • Type: Alkalinity

Test system: visual continuous color disk Item: water quality test kit Type: alkalinity Number of tests: 100

25
7.3
SCORE
Elos Aqua Test Kit - Phosphate

Elos USA Elos Aqua Test Kit

Phosphate

by Elos USA
What We like

Easy reading: ?RealColor? technology.

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Product Features

  • "Safe reagents": reagents and testing procedures are based on Low Risk Reagents. None of our test ki
  • NIST validation: each batch of elos reagents is validated using NIST (National Institute of Standard
  • High precision: thanks to the use of calibrated droppers

Nist validation: each batch of elos reagents is validated using nist (national institute of standard "safe reagents": reagents and testing procedures are based on low risk reagents. none of our test ki High precision: thanks to the use of calibrated droppers

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