Pet Circle

    Fish Water Conditioners

    1 - 38 out of 38 products

    Sale
    Prime Water Conditioner

    SeachemPrime Water Conditioner

    4.9 (9)
    $22.49($9.00/100ml)
    $24.99Save 10%
    $21.37
    Sale
    Tapwater Conditioner For Fresh And Salt Water Aquariums

    ApiTapwater Conditioner For Fresh And Salt Water Aquariums

    3.8 (5)
    $31.19($3.30/100ml)
    $38.99Save 20%
    $31.19
    Sale
    Stress Coat Aquarium Water Conditioner

    ApiStress Coat Aquarium Water Conditioner

    5 (9)
    $15.99($6.75/100ml)
    $19.99Save 20%
    $15.99
    Sale
    Stability

    SeachemStability

    $12.74($12.74/100ml)
    $14.99Save 15%
    $12.10
    Sale
    Quick Start Freshwater And Saltwater Aquarium Water Treatment

    ApiQuick Start Freshwater And Saltwater Aquarium Water Treatment

    4.7 (3)
    $12.79($10.84/100ml)
    $15.99Save 20%
    $12.79
    Sale
    SureStart Fish Water Conditioners 3 Pack

    SeachemSureStart Fish Water Conditioners 3 Pack

    $27.99($9.33/100ml)
    $34.99Save 20%
    $27.99
    Sale
    Stress Zyme Freshwater And Saltwater Aquarium Water Cleaner

    ApiStress Zyme Freshwater And Saltwater Aquarium Water Cleaner

    5 (11)
    $23.99($5.07/100ml)
    $29.99Save 20%
    $23.99
    Sale
    Pond Stress Coat Water Conditioner

    ApiPond Stress Coat Water Conditioner

    $37.59($3.97/100ml)
    $46.99Save 20%
    $37.59
    Sale
    Aquarium Start Up Pack

    ApiAquarium Start Up Pack

    $10.39
    $12.99Save 20%
    $10.39
    Sale
    Betta Basics

    SeachemBetta Basics

    $17.59($7.04/100ml)
    $21.99Save 20%
    $17.59
    Sale
    Ammo Lock Freshwater And Saltwater Aquarium Ammonia Detoxifer

    ApiAmmo Lock Freshwater And Saltwater Aquarium Ammonia Detoxifer

    5 (2)
    $23.19($4.90/100ml)
    $28.99Save 20%
    $23.19
    Sale
    Pond Prime

    SeachemPond Prime

    $29.74($5.95/100ml)
    $34.99Save 15%
    $29.74
    Sale
    Pond Care Chlorine And Heavy Metal Detoxifier

    ApiPond Care Chlorine And Heavy Metal Detoxifier

    $39.19($4.14/100ml)
    $48.99Save 20%
    $39.19
    Sale
    Betta Water

    ApiBetta Water

    $21.59($1.14/100ml)
    $26.99Save 20%
    $21.59
    Sale
    Gold Basics

    SeachemGold Basics

    $6.79($13.58/100ml)
    $7.99Save 15%
    $6.79
    One And Only Live Nitrifying Bacteria For Freshwater Aquariums

    Dr Tims AquaticsOne And Only Live Nitrifying Bacteria For Freshwater Aquariums

    $39.99($66.65/100ml)
    $37.99
    Aqua Plus Water Conditioner

    NutrafinAqua Plus Water Conditioner

    5 (1)
    $8.99($7.49/100ml)
    $8.99
    One And Only Live Nitrifying Bacteria For Marine Aquariums

    Dr Tims AquaticsOne And Only Live Nitrifying Bacteria For Marine Aquariums

    $49.99($83.32/100ml)
    $47.49
    Marine Quick Start Aquarium Water Conditioner

    ApiMarine Quick Start Aquarium Water Conditioner

    5 (2)
    $33.99($7.19/100ml)
    $33.99
    Easybalance Plus Water Conditioner

    TetraEasybalance Plus Water Conditioner

    5 (2)
    $16.99($6.80/100ml)
    $16.99
    Safe Dry Conditioner

    SeachemSafe Dry Conditioner

    $44.99($18.00/100g)
    Aquasafe Plus Bioextract Formula Water Conditioner

    TetraAquasafe Plus Bioextract Formula Water Conditioner

    4.9 (7)
    $25.99($5.20/100ml)
    $25.99
    L Unidose Start Up For Marine Tanks

    Aquarium SystemsL Unidose Start Up For Marine Tanks

    $29.99
    $28.49
    Phosguard

    SeachemPhosguard

    $27.99($11.20/100ml)
    Cycle Biological Aquarium Supplement

    NutrafinCycle Biological Aquarium Supplement

    $15.99($6.40/100ml)
    $15.99
    Biological Enhancer

    FluvalBiological Enhancer

    5 (2)
    $19.99($8.00/100ml)
    $19.99
    Water Conditioner

    FluvalWater Conditioner

    5 (2)
    $22.49($4.50/100ml)
    $22.49
    Marine Stress Coat Water Conditioner For Salt Water Aquariums

    ApiMarine Stress Coat Water Conditioner For Salt Water Aquariums

    $49.99($10.57/100ml)
    $49.99
    Aquacleanse Tap Water Detoxifier For Marine Aquariums

    Dr Tims AquaticsAquacleanse Tap Water Detoxifier For Marine Aquariums

    $24.99($20.82/100ml)
    $23.74
    Amguard Water Treatment

    SeachemAmguard Water Treatment

    5 (1)
    $30.99($12.40/100ml)
    Re Balance Aquarium Purifier For Tropical Water Tanks

    Aquarium SystemsRe Balance Aquarium Purifier For Tropical Water Tanks

    $19.99
    $18.99
    Betta Water Conditioner

    MarinaBetta Water Conditioner

    $6.99($27.96/100ml)
    $6.99
    Aquacleanse Tap Water Detoxifier For Freshwater Aquariums

    Dr Tims AquaticsAquacleanse Tap Water Detoxifier For Freshwater Aquariums

    $23.99($19.99/100ml)
    $22.79
    First Defense Natural Water Clarifier For Freshwater Aquariums

    Dr Tims AquaticsFirst Defense Natural Water Clarifier For Freshwater Aquariums

    $25.99($21.66/100ml)
    $24.69
    L Unidose Start Up For Freshwater Tanks

    Aquarium SystemsL Unidose Start Up For Freshwater Tanks

    $29.99
    $28.49
    First Defense Natural Water Clarifier For Marine Aquariums

    Dr Tims AquaticsFirst Defense Natural Water Clarifier For Marine Aquariums

    $26.99($22.49/100ml)
    $25.64
    Betta Plus Conditioner

    NutrafinBetta Plus Conditioner

    $3.99($6.65/100ml)
    $3.99
    Sold Out
    Ammonium Chloride Solution

    Dr Tims AquaticsAmmonium Chloride Solution

    $13.99($23.32/100ml)
    $13.29

    38 of 38 items

    Next day delivery

    Vet Articles

  1. Setting Up A Fish Tank

    Setting Up A Fish Tank

    Thinking of getting a fish? Check out our guide for setting up a tank and home care tips!

  2. Choosing the Right Filter for Your Aquarium

    Choosing the Right Filter for Your Aquarium

    New fish tank and not sure how to keep it clean? Learn the secrets to crystal-clear water. Selecting the right tank filter is the single most important decision for maintaining water quality and healthy fish!

  3. Fighting Fish Care Guide

    Fighting Fish Care Guide

    Thinking of getting a fighting fish? Before you buy that tiny bowl, read our vet's guide. We cover everything from the right tank setup to diet and care for a happy, healthy betta.

  4. Fish Food & Feeding: A Vet's Guide

    Fish Food & Feeding: A Vet's Guide

    From flakes and pellets to sinking wafers, choosing the right fish food can be confusing. Our guide helps you select the best diet for healthy, vibrant fish and a clean tank.

  5. Siamese Fighting Fish Facts & Myths: Ultimate Betta Care Guide

    Siamese Fighting Fish Facts & Myths: Ultimate Betta Care Guide

    Wondering about getting Siamese Fighting Fish? Take a look at some facts and myths about Bettas!