Filter
  • 3 Sizes

    Prime Aquarium Water Conditioner

    Discounted Price $4.31 - 13.45 Old Price $4.99 - 13.45
    $4.09 - 12.78
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49
  • 2 Sizes

    SeaChem Stability New Tank Stabilization System Aquarium Water Conditioner

    Discounted Price $3.94 - 8.00 Old Price $7.99 - 8.00
    $3.74 - 7.60
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Flourite® Premium Aquarium Plant Substrate

    Old Price $19.27
    $18.31
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49
  • 2 Sizes

    Flourish® Freshwater Aquarium Comprehensive Plant Supplement

    Discounted Price $6.59 - 10.52 Old Price $10.59 - 11.39
    $6.26 - 9.99
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem Alert Combo Aquarium pH & Ammonia Detector

    Discounted Price $9.54 Old Price $14.99
    $9.06
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Flourish Tabs™ Aquarium Gravel Bed Plant Supplement

    Discounted Price $8.33 Old Price $8.99
    $7.91
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49
  • 2 Sizes

    Seachem® Matrix™

    Old Price $20.34 - 35.05
    $19.32 - 33.30
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49
  • 2 Sizes

    Seachem® Prime®

    Old Price $52.11 - 88.96
    $49.50 - 84.51
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Cichlid Lake Salt™

    Old Price $20.37
    $19.35
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49
  • 2 Sizes

    Seachem® Stability®

    Old Price $48.11 - 77.06
    $45.70 - 73.21
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Purigen®

    Old Price $57.19
    $54.33
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Marine Buffer™

    Old Price $21.00
    $19.95
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49
  • 2 Sizes

    Seachem® Flourish Excel™

    Old Price $36.14 - 66.70
    $34.33 - 63.37
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem Neutral Regulator Aquarium pH Water Conditioner

    Old Price $7.24
    $6.88
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal 75 Matrix Carbon

    Discounted Price $10.13 Old Price $20.44

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal 75 Zeolite Filter Pouch

    Old Price $8.19

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Buffer™

    Old Price $21.00
    $19.95
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal Matrix™

    Discounted Price $6.98 Old Price $6.99

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal

    Discounted Price $6.79 Old Price $13.69

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Advantage Magnesium™

    Discounted Price $12.85 Old Price $25.91
    $12.21
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal 110 MatrixCarbon

    Old Price $13.29

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal™ Zeolite

    Discounted Price $9.29 Old Price $9.99

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Plus™

    Discounted Price $10.61 Old Price $10.99
    $10.08
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Fusion 1™

    Old Price $12.99
    $12.34
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Carbonate™

    Discounted Price $6.87 Old Price $13.88
    $6.53
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Iodide™

    Discounted Price $10.19 Old Price $20.55
    $9.68
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Complete™

    Discounted Price $10.27 Old Price $20.70
    $9.76
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal

    Discounted Price $5.40 Old Price $11.06

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal Matrix™

    Discounted Price $7.63 Old Price $7.99

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Tidal

    Discounted Price $8.36 Old Price $8.99

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Flourish®

    Old Price $36.14
    $34.33
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49
  • 2 Sizes

    Seachem® Phosguard™

    Discounted Price $32.30 - 60.33 Old Price $60.33 - 65.10
    $30.69 - 57.31
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

  • Seachem® Reef Fusion 2™

    Old Price $12.99
    $12.34
    5% off Auto Ship

    Sign In & Enjoy Free Shipping Over $49

Seachem Aquarium Supplies

Keep their aquarium sparkling clean and looking its best. With Seachem products, including water conditioners and stability systems, plant substrates, Seachem Flourish plant supplements, clarifiers and Seachem Tidal filters and matrix, you can help your fish not only survive, but thrive. Explore our complete collection of aquarium supplies, and give your fish a happy, healthy place to call home.
Read More
Read Less