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API Aquarium Water Test Kits

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Best selling

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  • API Master Freshwater Aquarium Test Kit

    API Master Freshwater Aquarium Test Kit

    (361)
    AU $67.00 New
  • API GH General & KH Carbonate Hardness Test Kit - Freshwater

    API GH General & KH Carbonate Hardness Test Kit - Freshwater

    (34)
    AU $32.00 New
  • API Aquaponic Liquid Test Tube -24 Piece

    API Aquaponic Liquid Test Tube -24 Piece

    (10)
    AU $14.90 New
  • API LR1800 Nitrate Test Kit

    API LR1800 Nitrate Test Kit

    (10)
    AU $27.00 New
  • API Marine Reef Master Test Kit 4 in 1 - Calcium Phosphate Nitrate KH Tests

    API Marine Reef Master Test Kit 4 in 1 - Calcium Phosphate Nitrate KH Tests

    (5)
    AU $81.96 New
  • API Phosphate Test Kit for Healthy Acquarium or Pound, Pack of 150 (AP063L)

    API Phosphate Test Kit for Healthy Acquarium or Pound, Pack of 150 (AP063L)

    (4)
    AU $39.63 New
  • API PondCare Pond Master Test Kit Liquid Water Conditioner

    API PondCare Pond Master Test Kit Liquid Water Conditioner

    (11)
    AU $65.00 New
  • API Saltwater Master Test Kit

    API Saltwater Master Test Kit

    (7)
    AU $66.00 New
    AU $45.00 Used

Top rated

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  • API Master Freshwater Aquarium Test Kit

    API Master Freshwater Aquarium Test Kit

    (361)
    99% agree - Would recommend
    AU $67.00 New
  • API GH General & KH Carbonate Hardness Test Kit - Freshwater

    API GH General & KH Carbonate Hardness Test Kit - Freshwater

    (34)
    96% agree - Would recommend
    AU $32.00 New
  • API PondCare Pond Master Test Kit Liquid Water Conditioner

    API PondCare Pond Master Test Kit Liquid Water Conditioner

    (11)
    100% agree - Would recommend
    AU $65.00 New
  • API Aquaponic Liquid Test Tube -24 Piece

    API Aquaponic Liquid Test Tube -24 Piece

    (10)
    100% agree - Would recommend
    AU $14.90 New
  • API LR1800 Nitrate Test Kit

    API LR1800 Nitrate Test Kit

    (10)
    100% agree - Would recommend
    AU $27.00 New
  • API Ph Test Kit 250 Tests Freshwater Saltwater Aquarium

    API Ph Test Kit 250 Tests Freshwater Saltwater Aquarium

    (7)
    100% agree - Would recommend
    AU $19.99 New
  • API LR8600 Test Kit

    API LR8600 Test Kit

    (16)
    100% agree - Would recommend
    AU $34.50 New

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    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia EXP 2028 - image 1 of 4
    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia EXP 2028 - image 2 of 4
    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia EXP 2028 - image 3 of 4
    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia EXP 2028 - image 4 of 4

    API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia EXP 2028

    Australia's No.1 Registered API Seller
    Brand new · API
    (361)
    AU $67.00
    Free postage
    Click & Collect
    1,591 sold
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    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia with GH/KH - image 1 of 4
    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia with GH/KH - image 2 of 4
    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia with GH/KH - image 3 of 4
    • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia with GH/KH - image 4 of 4

    API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia with GH/KH

    Brand new · API
    (361)
    AU $85.00
    Free postage
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    408 sold
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  • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia - image 1 of 1

    API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia

    Brand new · API
    (361)
    AU $94.51
    Free postage
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    1,232 sold
    Ѕ⁣p⁣o⁣M⁣n⁣W⁣ ⁣s⁣H⁣o⁣I⁣r⁣e⁣ ⁣d⁣⁣V⁣Q⁣⁣⁣ ⁣F⁣⁣⁣G⁣⁣⁣ ⁣
  • API GH/KH Hardness Test Kit - image 1 of 1

    API GH/KH Hardness Test Kit

    Brand new · API
    (34)
    AU $23.50
    AU $8.50 postage
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    Only 3 left
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  • API Freshwater Master Test Kit (pH, HRpH, Ammonia, Nitrite, Nitrate) Exp 02/28 - image 1 of 3

    API Freshwater Master Test Kit (pH, HRpH, Ammonia, Nitrite, Nitrate) Exp 02/28

    Brand new · API
    (361)
    AU $67.00
    Free postage
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    628 sold
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  • API GH/KH Aquarium Test Kit Fish Tank General and Carbonate Hardness EXP 2027 - image 1 of 1

    API GH/KH Aquarium Test Kit Fish Tank General and Carbonate Hardness EXP 2027

    Brand new · API
    (34)
    AU $32.00
    Free postage
    Click & Collect
    610 sold
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  • API Glass Test Tube Vials for Test Kit Pack of 4 - image 1 of 1

    API Glass Test Tube Vials for Test Kit Pack of 4

    Brand new · API
    AU $11.95
    AU $10.60 postage
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  • API Master Saltwater Marine Aquarium Test Kit 550+ Tests EXP2027 - image 1 of 2

    API Master Saltwater Marine Aquarium Test Kit 550+ Tests EXP2027

    Brand new · API
    (7)
    AU $66.00
    Free postage
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    446 sold
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  • API Pond Care Master Freshwater Pond Test Kit EXP2027 - image 1 of 2

    API Pond Care Master Freshwater Pond Test Kit EXP2027

    Brand new · API
    (11)
    AU $69.00
    Free postage
    Click & Collect
    273 sold
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  • API Freshwater Master Test Kit - image 1 of 1

    API Freshwater Master Test Kit

    Brand new · API
    (361)
    AU $69.95
    Free postage
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  • API Phosphate Aquarium Water Test Kit - image 1 of 1

    API Phosphate Aquarium Water Test Kit

    Brand new · API
    (4)
    AU $41.00
    Free postage
    Click & Collect
    212 sold
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  • API Ammonia Test Kit - image 1 of 1

    API Ammonia Test Kit

    Brand new · API
    (16)
    AU $35.00
    Free postage
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    163 sold
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  • API Reef Master Saltwater Marine Aquarium Test Kit - image 1 of 2

    API Reef Master Saltwater Marine Aquarium Test Kit

    Brand new · API
    (5)
    AU $81.96
    Free postage
    Click & Collect
    37 sold
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  • API Ammonia Test Kit 130 Tests - image 1 of 1

    API Ammonia Test Kit 130 Tests

    Brand new · API
    (16)
    AU $27.00
    Trending at AU $26.10

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

    AU $9.00 postage
    Click & Collect
    68 sold
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  • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia - image 1 of 4

    API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia

    New (other) · API
    (361)
    AU $61.00
    or Best Offer
    Local pickup
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  • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia - image 1 of 1

    API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia

    Brand new · API
    (361)
    AU $82.00
    Free postage
    Click & Collect
    349 sold
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  • API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia w/ GH/KH - image 1 of 4

    API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia w/ GH/KH

    Brand new · API
    AU $85.00
    Free postage
    16 sold
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  • API Pond Master Test Kit - image 1 of 2

    API Pond Master Test Kit

    Brand new · API
    (11)
    AU $65.00
    Free postage
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  • API pH Test Kit 250 Tests - pH Water Levels 6.0-7.6 in Aquarium Fish Tank Pond - image 1 of 4

    API pH Test Kit 250 Tests - pH Water Levels 6.0-7.6 in Aquarium Fish Tank Pond

    Brand new · API
    (7)
    AU $27.90
    Trending at AU $27.86

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

    Free postage
    265 sold
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  • API Nitrate Test Kit Aquarium Water Testing EXP 2026 - image 1 of 1

    API Nitrate Test Kit Aquarium Water Testing EXP 2026

    Brand new · API
    (10)
    AU $37.00
    Free postage
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    110 sold
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  • API High Range PH Test Kit Aquarium Water Testing - image 1 of 1

    API High Range PH Test Kit Aquarium Water Testing

    Brand new · API
    (1)
    AU $26.00
    Free postage
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    73 sold
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  • API Test Tubes x 3 for Aquarium Test Kits - image 1 of 1

    API Test Tubes x 3 for Aquarium Test Kits

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    AU $22.00
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    102 sold
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  • 3 x API Glass Test Tube with Caps for Aquarium Test Kit Testing Water Fish Tubes - image 1 of 4

    3 x API Glass Test Tube with Caps for Aquarium Test Kit Testing Water Fish Tubes

    Brand new · API
    (10)
    AU $22.90
    Free postage
    840 sold
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  • API Calcium Aquarium Test Kit - image 1 of 1

    API Calcium Aquarium Test Kit

    Brand new · API
    (1)
    AU $36.00
    Free postage
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  • API Ammonia Test Strips 25 Pack - Quick Test NH3/NH4 Aquarium Fish Tank Water - image 1 of 4

    API Ammonia Test Strips 25 Pack - Quick Test NH3/NH4 Aquarium Fish Tank Water

    Brand new · API
    (1)
    AU $47.90
    Free postage
    Only 3 left
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  • API Calcium Aquarium Test Kit - image 1 of 4

    API Calcium Aquarium Test Kit

    Brand new · API
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    AU $29.99
    AU $6.99 postage
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  • API Nitrite Aquarium Fresh Salt Test Kit EXP 2026 - image 1 of 1

    API Nitrite Aquarium Fresh Salt Test Kit EXP 2026

    Brand new · API
    (2)
    AU $29.00
    Free postage
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    55 sold
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  • API GH & KH Test Kit Aquarium Fish Tank Test - image 1 of 1

    API GH & KH Test Kit Aquarium Fish Tank Test

    General & Carbonate Hardness
    Brand new · API
    AU $29.95
    AU $9.50 postage
    Only 2 left
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  • API Master Aquarium Reef Test Kit - image 1 of 1

    API Master Aquarium Reef Test Kit

    Brand new · API
    AU $92.11
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  • API Master Aquarium Saltwater Test Kit - image 1 of 1

    API Master Aquarium Saltwater Test Kit

    Brand new · API
    AU $86.74
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  • API Test Kit Nitrate for Fresh And Saltwater - image 1 of 1

    API Test Kit Nitrate for Fresh And Saltwater

    Brand new · API
    AU $41.12
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  • API Nitrate Test Kit 90 Tests - image 1 of 1

    API Nitrate Test Kit 90 Tests

    Brand new · API
    (10)
    AU $27.00
    Trending at AU $33.25

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  • API 5 in 1 POND Test Strips - image 1 of 1

    API 5 in 1 POND Test Strips

    Brand new · API
    AU $39.95
    AU $8.95 postage
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  • API pH Aquarium Test Kit - 250 Tests - image 1 of 4

    API pH Aquarium Test Kit - 250 Tests

    Brand new · API
    (7)
    AU $19.99
    Trending at AU $27.86

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  • API Phosphate Test Kit - Testing PO4 in Freshwater, Saltwater & Marine Aquariums - image 1 of 4

    API Phosphate Test Kit - Testing PO4 in Freshwater, Saltwater & Marine Aquariums

    Brand new · API
    (4)
    AU $49.90
    Free postage
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  • API 5 in 1 Aquarium Test Strips 100 Pack pH Nitrate Nitrate KH GH Hardness - image 1 of 1

    API 5 in 1 Aquarium Test Strips 100 Pack pH Nitrate Nitrate KH GH Hardness

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    AU $79.00
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    118 sold
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  • API 5 in 1 Aquarium Test Strips EXPRESS POST - image 1 of 1

    API 5 in 1 Aquarium Test Strips EXPRESS POST

    Brand new · API
    AU $33.95
    AU $13.95 postage
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  • API Nitrate Test Kit for Fresh And Saltwater - image 1 of 1

    API Nitrate Test Kit for Fresh And Saltwater

    Brand new · API
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    AU $37.89
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    58 sold
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  • API Nitrite Test Kit 180 Tests - image 1 of 1

    API Nitrite Test Kit 180 Tests

    Brand new · API
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    AU $22.00
    AU $9.00 postage
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  • API Test Kit|free shipping AU - image 1 of 4

    API Test Kit|free shipping AU

    Brand new · API
    AU $84.28
    Free postage
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  • API PH Test Kit With Adjusters Aquarium Water Testing - image 1 of 1

    API PH Test Kit With Adjusters Aquarium Water Testing

    Brand new · API
    AU $32.00
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  • API Nitrate NO3- Test Kit Aquarium Fish Tank Test - image 1 of 1

    API Nitrate NO3- Test Kit Aquarium Fish Tank Test

    Brand new · API
    AU $29.95
    AU $11.15 postage
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  • API Copper Test Kit Aquarium Water - image 1 of 1

    API Copper Test Kit Aquarium Water

    Brand new · API
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    AU $34.00
    Free postage
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