Fresh Water GH Aquarium Tests & Treatment

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  • SHRIMP SALT NEO GH+ KH+ 120g - Image 1 of 1

    SHRIMP SALT NEO GH+ KH+ 120g

    Brand New
    $26.92
    $11.97 shipping
  • Freshwater Hardness GH & KH Test Kit GH &KH test Kit - Image 1 of 1

    Freshwater Hardness GH & KH Test Kit GH &KH test Kit

    Brand New ยท API
    (47)
    $13.13
    Free shipping
    • Seachem Equilibrium 600 grams Restores and Maintains Mineral Balance and GH - Image 1 of 3
    • Seachem Equilibrium 600 grams Restores and Maintains Mineral Balance and GH - Image 2 of 3
    • Seachem Equilibrium 600 grams Restores and Maintains Mineral Balance and GH - Image 3 of 3

    Seachem Equilibrium 600 grams Restores and Maintains Mineral Balance and GH

    Pre-Owned ยท Seachem
    $14.99
    or Best Offer
    $6.29 shipping
  • Dennerle Shrimp King GH+/KH+ Salt Multimineral DE-KH 200G - Image 1 of 1

    Dennerle Shrimp King GH+/KH+ Salt Multimineral DE-KH 200G

    Brand New ยท Dennerle
    (1)
    $23.15
    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
    269 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)
    $14.99
    Free shipping
    Only 2 left
  • Seachem Alkaline Buffer - Image 1 of 1

    Seachem Alkaline Buffer

    Brand New ยท Seachem
    (2)
    $12.69 to $76.11
    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
  • Seachem Discus Buffer - Image 1 of 1

    Seachem Discus Buffer

    Brand New ยท Seachem
    (1)
    $12.79 to $85.99
    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
  • Salifert Freshwater GH Test Kit - Image 1 of 1

    Salifert Freshwater GH Test Kit

    Brand New ยท Salifert
    $12.49
    Free shipping
  • Brightwell Remineraliz-P 500 grams Freshwater Mineral Balance Powder - Image 1 of 1

    Brightwell Remineraliz-P 500 grams Freshwater Mineral Balance Powder

    Brand New ยท Brightwell Aquatics
    (1)
    $28.79
    Was: $31.99was - US $31.99
    or Best Offer
    Free shipping
  • Seachem Discus Buffer 500g White Aquarium Water Conditioner pH Adjuster - Image 1 of 4

    Seachem Discus Buffer 500g White Aquarium Water Conditioner pH Adjuster

    Brand New ยท Seachem
    $14.86
    Free shipping
  • 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
  • Discus Buffer - Image 1 of 1

    Discus Buffer

    Brand New ยท Seachem
    $17.94
    Free shipping
  • Seachem Equilibrium 300gram - Image 1 of 2

    Seachem Equilibrium 300gram

    Brand New ยท Seachem
    $15.22
    Free shipping
  • Brightwell Aquatics MicroBacterCLEAN 2 Liters Marine Aquarium Cleaning Enzymes - Image 1 of 1

    Brightwell Aquatics MicroBacterCLEAN 2 Liters Marine Aquarium Cleaning Enzymes

    Brand New ยท Brightwell Aquatics
    $82.79
    Was: $91.99was - US $91.99
    or Best Offer
    Free shipping
  • Brightwell Aquatics Remineraliz-P - Image 1 of 1

    Brightwell Aquatics Remineraliz-P

    Brand New ยท Brightwell Aquatics
    (1)
    $19.69 to $25.99
    Free shipping
  • SEACHEM EQUILIBRIUM Restores Maintains Mineral Balance and GH - Image 1 of 4

    SEACHEM EQUILIBRIUM Restores Maintains Mineral Balance and GH

    Brand New ยท Seachem
    $14.79 to $22.99
    Free shipping
    15 sold
  • 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
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $26.00
    Free shipping
  • Seachem Equilibrium 300 grams Restores and Maintains Mineral Balance and GH - Image 1 of 2

    Seachem Equilibrium 300 grams Restores and Maintains Mineral Balance and GH

    Brand New ยท Seachem
    $17.99
    Was: $19.99was - US $19.99
    or Best Offer
    Free 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
  • Fritz Dark Water 4oz Almond Leaf Extract Creates Blackwater Conditions Naturally - Image 1 of 1

    Fritz Dark Water 4oz Almond Leaf Extract Creates Blackwater Conditions Naturally

    Brand New
    (2)
    $14.62
    Was: $16.24was - US $16.24
    or Best Offer
    Free shipping
    4 watching
  • API GH & KH Test Kit - Image 1 of 1

    API GH & KH Test Kit

    Brand New ยท API
    (47)
    $11.98
    $4.84 shipping
  • Seachem Equilibrium 600gram (GH Booster) - Image 1 of 1

    Seachem Equilibrium 600gram (GH Booster)

    Brand New ยท Seachem
    $13.75
    $10.00 shipping
  • Seachem Equilibrium 300gram (GH Booster) - Image 1 of 1

    Seachem Equilibrium 300gram (GH Booster)

    Brand New ยท Seachem
    $7.94
    $5.80 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
  • GENERAL/CARBONATE (GH&KH) HARDNESS TEST KIT EACH - Image 1 of 1

    GENERAL/CARBONATE (GH&KH) HARDNESS TEST KIT EACH

    Brand New ยท API
    (47)
    $17.97
    Free shipping
  • Catappa Indian Almond Leaves Ketapang Leaf Shrimp Betta Fish-Fresh 50Pcs - Image 1 of 4

    Catappa Indian Almond Leaves Ketapang Leaf Shrimp Betta Fish-Fresh 50Pcs

    Brand New ยท Unbranded
    $15.99
    $11.99 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

    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.

    Brand New ยท API
    (47)
    $28.82
    Free shipping
  • API Goldfish Protect Aquarium Water Conditioner 4 fl oz - Image 1 of 1

    API Goldfish Protect Aquarium Water Conditioner 4 fl oz

    Brand New ยท API
    (2)
    $9.95
    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
  • 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
    Trending at $13.49

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

    $4.08 shipping
  • Seachem Equilibrium Restores & Maintains Mineral/GH Aquarium Balance, 300G - Image 1 of 1

    Seachem Equilibrium Restores & Maintains Mineral/GH Aquarium Balance, 300G

    Brand New ยท Seachem
    $14.99
    Free shipping
  • SEACHEM Discus Buffer 250 gram - For Soft Aquarium Water Lower PH & GH - Image 1 of 4

    SEACHEM Discus Buffer 250 gram - For Soft Aquarium Water Lower PH & GH

    Brand New ยท Seachem
    $12.99
    Free shipping
    3 watching
  • Seachem Discus Buffer 1 Kilogram Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish - Image 1 of 1

    Seachem Discus Buffer 1 Kilogram Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish

    Brand New ยท Seachem
    (1)
    $1.00
    $6.93 shipping
    0 bids
    1d 20h
  • Freshwater Hardness GH & KH Test Kit GH &KH test Kit - Image 1 of 1

    Freshwater Hardness GH & KH Test Kit GH &KH test Kit

    Brand New ยท API
    (47)
    $13.13
    Free shipping
  • Seachem PH 5.0 Discus Buffer 2.2 lbs Adjusts pH to 5.8 - 6.8 - Image 1 of 3

    Seachem PH 5.0 Discus Buffer 2.2 lbs Adjusts pH to 5.8 - 6.8

    Brand New ยท Seachem
    (1)
    $24.95
    or Best Offer
    Trending at $25.84

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

    $13.10 shipping
  • Brightwell Aquatics Shrimp Caridina GH+ Mineral Trace Element Shrimp Tank CRS - Image 1 of 1

    Brightwell Aquatics Shrimp Caridina GH+ Mineral Trace Element Shrimp Tank CRS

    Brand New ยท Brightwell Aquatics
    $25.99
    Free shipping
    8 watching
  • Seachem Discus Buffer 1 Kilogram Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish - Image 1 of 1

    Seachem Discus Buffer 1 Kilogram Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish

    Brand New ยท Seachem
    (1)
    $33.74
    Was: $37.49was - US $37.49
    or Best Offer
    Free shipping
  • SEACHEM ALKALINE BUFFER Raises pH 4 KG ( 8.8 LB ) - Image 1 of 3

    SEACHEM ALKALINE BUFFER Raises pH 4 KG ( 8.8 LB )

    Brand New ยท Seachem
    (2)
    $79.99
    Free shipping
  • Brightwell Aquatics Florin Delta GH+ Plant Fertilizer GH Booster Planted Tank - Image 1 of 1

    Brightwell Aquatics Florin Delta GH+ Plant Fertilizer GH Booster Planted Tank

    Brand New ยท Brightwell Aquatics
    $18.99 to $36.99
    Free shipping
  • SEACHEM Discus Buffer 50 gram for Soft Aquarium Water Lowers PH & GH - Image 1 of 4

    SEACHEM Discus Buffer 50 gram for Soft Aquarium Water Lowers PH & GH

    Brand New ยท Seachem
    $8.99
    Free shipping
  • Seachem Equilibrium 600 grams Restores and Maintains Mineral Balance and GH - Image 1 of 1

    Seachem Equilibrium 600 grams Restores and Maintains Mineral Balance and GH

    Brand New ยท Seachem
    $28.12
    Was: $31.24was - US $31.24
    or Best Offer
    Free shipping
  • Seachem Discus Buffer Aquarium Water Treatment - Image 1 of 4

    Seachem Discus Buffer Aquarium Water Treatment

    Brand New ยท Seachem
    (5)
    $7.95 to $21.95
    Free shipping
  • Seachem Discus Buffer 250 grams Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish - Image 1 of 2

    Seachem Discus Buffer 250 grams Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish

    Brand New ยท Seachem
    (5)
    $17.99
    Was: $19.99was - US $19.99
    or Best Offer
    Free shipping
  • Discus Buffer Lower pH/GH Hardness Aquarium Water Conditioner Seachem 250gm - Image 1 of 1

    Discus Buffer Lower pH/GH Hardness Aquarium Water Conditioner Seachem 250gm

    Brand New ยท Seachem
    (5)
    $17.97
    Free shipping
    Only 2 left
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $25.53
    Free shipping
  • SEACHEM Discus Buffer 1 KILOGRAM ( 2.2 LB. ) Lower pH - Image 1 of 4

    SEACHEM Discus Buffer 1 KILOGRAM ( 2.2 LB. ) Lower pH

    Brand New ยท Seachem
    $24.79
    $8.90 shipping
  • 50 Piece Quick Test - Image 1 of 3

    50 Piece Quick Test

    Brand New ยท sera
    (1)
    $26.00
    Free shipping
  • Seachem Discus Buffer 1 Kilogram Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish - Image 1 of 4

    Seachem Discus Buffer 1 Kilogram Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish

    Brand New ยท Seachem
    (1)
    $27.95
    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
  • 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
  • Seachem Discus Buffer 500 grams Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish - Image 1 of 1

    Seachem Discus Buffer 500 grams Adjusts pH to 5.8 - 6.8 Ideal for Discus Fish

    Brand New ยท Seachem
    $28.12
    Was: $31.24was - US $31.24
    or Best Offer
    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
  • Fritz Aquatics Dark Water Almond Leaf Extract for Betta's 4 oz - Image 1 of 1

    Fritz Aquatics Dark Water Almond Leaf Extract for Betta's 4 oz

    Brand New
    (2)
    $12.49
    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)
    $19.90
    Free shipping
  • Seachem Alkaline Buffer For Aquarium - 4 kg - 8.8 lbs - Image 1 of 1

    Seachem Alkaline Buffer For Aquarium - 4 kg - 8.8 lbs

    Brand New ยท Seachem
    (2)
    $105.98
    Free shipping

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