Fresh Water GH Aquarium Water Test Kits

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  • RA GH & KH General & Carbonate Hardness Test Kit - Freshwater - Image 1 of 1

    RA GH & KH General & Carbonate Hardness Test Kit - Freshwater

    Brand New ยท API
    (47)
    $16.20
    or Best Offer
    Free shipping
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit - Image 1 of 4
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit - Image 2 of 4
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit - Image 3 of 4
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit - Image 4 of 4

    API GH & KH TEST KIT Freshwater Aquarium Water Test Kit

    Brand New ยท API
    (47)
    $15.89
    Free shipping
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. 4.8 oz. - Image 1 of 4
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. 4.8 oz. - Image 2 of 4
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. 4.8 oz. - Image 3 of 4
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. 4.8 oz. - Image 4 of 4

    API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. 4.8 oz.

    Brand New ยท API
    (47)
    $28.82
    Free shipping
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 1 of 2
    • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 2 of 2

    API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz.

    Brand New ยท API
    (47)
    $19.90
    Free shipping
  • RA GH & KH General & Carbonate Hardness Test Kit - Freshwater & FREE SHIPPING - Image 1 of 1

    RA GH & KH General & Carbonate Hardness Test Kit - Freshwater & FREE SHIPPING

    Brand New ยท API
    (47)
    $13.40
    Free shipping
  • API GH & KH Test Kit - Image 1 of 1

    API GH & KH Test Kit

    Brand New ยท API
    (47)
    $13.49
    Free shipping
    267 sold
  • Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water - Image 1 of 1

    Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water

    Brand New ยท Tรฉtra
    (10)
    $15.99
    Free shipping
    Only 1 left!
  • API GH & KH Test Kit - Image 1 of 1

    API GH & KH Test Kit

    Brand New ยท API
    (47)
    $11.98
    Trending at $13.40

    eBay determines this price through a machine learned model of the product's sale prices within the last 90 days.

    $4.84 shipping
  • API GH & KH Test Kit measures alkalinity Safe and Easy - Image 1 of 4

    API GH & KH Test Kit measures alkalinity Safe and Easy

    Brand New ยท Aquarium Pharmaceuticals
    $14.77
    Was: $17.38was - US $17.38
    Free shipping
  • API GH & KH Test Kit for Freshwater Aquariums General & Carbonate Hardness Test - Image 1 of 2

    API GH & KH Test Kit for Freshwater Aquariums General & Carbonate Hardness Test

    Brand New ยท API
    (47)
    $16.46
    or Best Offer
    Free shipping
  • Sera Aqua-Test Set Aquarium Multi Test Kit pH Alkalinity KH GH Nitrite NO2 - Image 1 of 2

    Sera Aqua-Test Set Aquarium Multi Test Kit pH Alkalinity KH GH Nitrite NO2

    Brand New ยท sera
    $40.49
    Was: $44.99was - US $44.99
    Free shipping
  • Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Waterใ€‹1700 - Image 1 of 2

    Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Waterใ€‹1700

    Brand New ยท Tรฉtra
    (10)
    $12.99
    $4.08 shipping
  • API GH KH Test Kit for Freshwater Aquarium Water Quality Monitoring 4.8 oz - Image 1 of 4

    API GH KH Test Kit for Freshwater Aquarium Water Quality Monitoring 4.8 oz

    Brand New ยท API
    (47)
    $16.39
    Free shipping
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $26.00
    Free shipping
  • 7 In 1 Aquarium Test Strips Fish Tank Test Kitfreshwater Saltwater Aquarium Wate - Image 1 of 4

    7 In 1 Aquarium Test Strips Fish Tank Test Kitfreshwater Saltwater Aquarium Wate

    Brand New
    $19.55
    Free shipping
    Only 1 left!
  • API pH , Ammonia or 5-in-1 TEST STRIPS Freshwater and Saltwater Aquarium - Image 1 of 4

    API pH , Ammonia or 5-in-1 TEST STRIPS Freshwater and Saltwater Aquarium

    Brand New ยท API
    (1)
    $17.49
    Free shipping
  • Tetra EasyStrips 25 Ammonia Test Strips, set of 3, NEW, Expiration 2025/12 - Image 1 of 4

    Tetra EasyStrips 25 Ammonia Test Strips, set of 3, NEW, Expiration 2025/12

    Brand New ยท Tรฉtra
    (10)
    $19.99
    or Best Offer
    Free shipping
  • 100 AQUARIUM TEST STRIPS 6 IN 1 FISH TANK TEST,FRESHWATER, SALTWATER AQUARIUMS - Image 1 of 1

    100 AQUARIUM TEST STRIPS 6 IN 1 FISH TANK TEST,FRESHWATER, SALTWATER AQUARIUMS

    Brand New
    $14.95
    Free shipping
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $26.00
    Free shipping
  • Sera 5 in 1 Test Strips Quick Test 50 Strips Freshwater pH gH kH No2 No3 - Image 1 of 2

    Sera 5 in 1 Test Strips Quick Test 50 Strips Freshwater pH gH kH No2 No3

    Brand New ยท sera
    (1)
    $25.87
    Was: $28.74was - US $28.74
    or Best Offer
    Free shipping
  • API ~ 5 In 1 Aquarium Test Strips ~ Fresh & Saltwater (4 ct)~NEW~ - Image 1 of 3

    API ~ 5 In 1 Aquarium Test Strips ~ Fresh & Saltwater (4 ct)~NEW~

    Brand New ยท API
    (10)
    $12.99
    or Best Offer
    Free shipping
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $25.53
    Free shipping
  • Aquarium Test Strips for Freshwater Fish: 7 in 1 Fish Tank Water Testing Kit ... - Image 1 of 4

    Aquarium Test Strips for Freshwater Fish: 7 in 1 Fish Tank Water Testing Kit ...

    Brand New
    $21.92
    Free shipping
  • API Freshwater Hardness GH & KH Test Kit - Image 1 of 1

    API Freshwater Hardness GH & KH Test Kit

    Brand New ยท API
    (47)
    $12.99
    Trending at $13.40

    eBay determines this price through a machine learned model of the product's sale prices within the last 90 days.

    $4.52 shipping
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $26.00
    Free shipping
  • Carbonate Test Kit - Fresh & Saltwater Carbonate Test Kit - Image 1 of 1

    Carbonate Test Kit - Fresh & Saltwater Carbonate Test Kit

    Brand New ยท API
    (20)
    $12.02
    Free shipping
  • Easy Life 50 Test Strips Water Test 6in1 pH, KH, GH, Chlorine, Nitrite & Nitrate - Image 1 of 1

    Easy Life 50 Test Strips Water Test 6in1 pH, KH, GH, Chlorine, Nitrite & Nitrate

    Brand New
    $19.85
    $18.53 shipping
  • API KH Test Kit Carbonate Hardness Stabilized Aquarium pH Fresh/Salt Water - Image 1 of 4

    API KH Test Kit Carbonate Hardness Stabilized Aquarium pH Fresh/Salt Water

    Brand New ยท API
    (20)
    $15.99
    Free shipping
  • API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 1 of 2

    API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz.

    Brand New ยท API
    (47)
    $16.69
    Free shipping
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $26.00
    Free shipping
  • API 3 Pack of Carbonate KH Test Kits for Fresh and Salt Water Aquariums - Image 1 of 3

    API 3 Pack of Carbonate KH Test Kits for Fresh and Salt Water Aquariums

    Brand New ยท API
    (20)
    $36.69
    Free shipping
  • Fresh/Salt Carbonate Test Kit - Image 1 of 4

    Fresh/Salt Carbonate Test Kit

    Brand New ยท API
    (20)
    $31.39
    Free shipping
  • Fresh/Salt Carbonate Test Kit - Image 1 of 4

    Fresh/Salt Carbonate Test Kit

    Brand New ยท API
    (20)
    $13.28
    Free shipping
  • Tropic Marin GH Test (Total Hardness) for approximately 100 Tests - Image 1 of 2

    Tropic Marin GH Test (Total Hardness) for approximately 100 Tests

    Brand New
    $13.54
    $18.53 shipping
  • Comprehensive 10-in-1 Aquarium Water Test Kit with Ammonia Strips - 150 Strips - Image 1 of 4

    Comprehensive 10-in-1 Aquarium Water Test Kit with Ammonia Strips - 150 Strips

    Brand New ยท Unbranded
    $50.99
    or Best Offer
    Free shipping
  • RA GH & KH General & Carbonate Hardness Test Kit - Freshwater - Image 1 of 2

    RA GH & KH General & Carbonate Hardness Test Kit - Freshwater

    Brand New ยท API
    (47)
    $15.00
    or Best Offer
    $13.35 shipping
  • Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water - Image 1 of 2

    Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water

    Brand New ยท Tรฉtra
    (10)
    $19.30
    or Best Offer
    $4.08 shipping
  • Tetra EasyStrips (25) 6-in-1 Aquarium Test Strips And 25 Ammonia Test Strips (2) - Image 1 of 2

    Tetra EasyStrips (25) 6-in-1 Aquarium Test Strips And 25 Ammonia Test Strips (2)

    Brand New ยท Tรฉtra
    (10)
    $16.95
    $8.85 shipping
  • Aquarium Systems GH Test Kit Total Hardness about 40Test NEW Improved Analysis - Image 1 of 1

    Aquarium Systems GH Test Kit Total Hardness about 40Test NEW Improved Analysis

    Brand New
    $16.12
    $18.53 shipping
  • Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water - Image 1 of 2

    Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water

    Brand New ยท Tรฉtra
    (10)
    $15.00
    or Best Offer
    $8.24 shipping
  • Sera Quick Test 6 In 1 (50 Pcs.) - Image 1 of 1

    Sera Quick Test 6 In 1 (50 Pcs.)

    Brand New ยท sera
    (1)
    $17.15
    Free shipping
  • RIKKA GENERAL FRESH WATER TEST KIT General & Carbonate Hardness pH 6.0-7.6 #61 - Image 1 of 3

    RIKKA GENERAL FRESH WATER TEST KIT General & Carbonate Hardness pH 6.0-7.6 #61

    Brand New
    $16.50
    Free shipping
  • LM API 5 in 1 Aquarium Test Strips 25 ct - Image 1 of 2

    LM API 5 in 1 Aquarium Test Strips 25 ct

    Brand New ยท API
    (1)
    $17.40
    Free shipping
  • Fauna Marin Reef ICP Test (Single Test) 37 Values - Image 1 of 1

    Fauna Marin Reef ICP Test (Single Test) 37 Values

    Brand New
    (2)
    $33.99
    Free shipping
  • ICP-ANALYSIS - Aquarium Fresh WATER ANALYSIS SINGLE TEST - 50 ELEMENTS - Image 1 of 2

    ICP-ANALYSIS - Aquarium Fresh WATER ANALYSIS SINGLE TEST - 50 ELEMENTS

    Brand New
    (2)
    $29.99
    Free shipping

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