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  • 4 Sizes

    Seachem® Prime® Aquarium Water Conditioner

    Discounted Price $3.19 - 13.45 Old Price $3.59 - 18.49
    $3.03 - 12.78
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  • 2 Sizes

    Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner

    Discounted Price $3.94 - 8.00 Old Price $7.99 - 15.99
    $3.74 - 7.60
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  • Seachem® Alert Combo™ Aquarium pH & Ammonia Detector

    Discounted Price $9.54 Old Price $16.99
    $9.06
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  • Seachem® Flourish® Freshwater Aquarium Comprehensive Plant Supplement

    Discounted Price $6.59 - 10.52 Old Price $11.99 - 15.99
    $6.26 - 9.99
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  • Seachem® Flourish Tabs™ Aquarium Gravel Bed Plant Supplement

    Discounted Price $8.33 Old Price $8.99
    $7.91
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  • Seachem® Flourite® Premium Aquarium Plant Substrate

    Discounted Price $19.27 Old Price $19.99

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    Free Same-Day Delivery!

  • Seachem® Reef Advantage Magnesium™

    Discounted Price $12.85 Old Price $25.91
    $12.21
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  • Seachem® Cichlid Lake Salt™

    Discounted Price $20.37 Old Price $20.99
    $19.35
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  • Seachem® Reef Fusion 1™

    Old Price $12.99
    $12.34
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  • Seachem® Marine Buffer

    Old Price $6.79

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    Free Same-Day Delivery!

  • Seachem® Reef Buffer™

    Discounted Price $21.00 Old Price $21.99
    $19.95
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  • Seachem® Reef Fusion 2™

    Discounted Price $12.99 Old Price $13.99
    $12.34
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  • Seachem® Neutral Regulator Aquarium pH Water Conditioner

    Discounted Price $7.24 Old Price $11.99
    $6.88
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  • Seachem® Reef Plus™

    Discounted Price $10.61 Old Price $10.99
    $10.08
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  • Seachem® Tidal Matrix™

    Discounted Price $7.63 Old Price $7.99
    $7.25
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  • Seachem® Reef Iodide™

    Discounted Price $10.19 Old Price $20.55
    $9.68
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  • 2 Sizes

    Seachem® Matrix™

    Discounted Price $20.34 - 35.05 Old Price $20.39 - 35.99
    $19.32 - 33.30
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  • Seachem® Tidal Matrix™

    Discounted Price $6.98 Old Price $6.99
    $6.63
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  • Seachem® Tidal ™

    Discounted Price $8.36 Old Price $16.88
    $7.94
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  • 2 Sizes

    Seachem® Flourish Excel™

    Discounted Price $36.14 - 66.70 Old Price $36.19 - 69.99
    $34.33 - 63.37
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  • 2 Sizes

    Seachem® Stability®

    Discounted Price $48.11 - 77.06 Old Price $79.99 - 96.67
    $45.70 - 73.21
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  • Seachem® Tidal™ 110 MatrixCarbon

    Discounted Price $13.29 Old Price $17.72
    $12.63
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  • Seachem® Tidal™ 75 Matrix Carbon

    Discounted Price $10.13 Old Price $20.44
    $9.62
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  • Seachem® Flourish®

    Discounted Price $36.14 Old Price $36.19
    $34.33
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  • Seachem® Tidal™ Zeolite

    Discounted Price $9.29 Old Price $12.39
    $8.83
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  • Seachem® Purigen®

    Old Price $57.19
    $54.33
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  • Seachem® Tidal™ 75 Zeolite Filter Pouch

    Discounted Price $8.19 Old Price $10.92
    $7.78
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  • 2 Sizes

    Seachem® Phosguard™

    Discounted Price $32.30 - 60.33 Old Price $60.39 - 65.10
    $30.69 - 57.31
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  • 2 Sizes

    Seachem® Prime®

    Discounted Price $52.11 - 88.96 Old Price $52.99 - 179.36
    $49.50 - 84.51
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  • Seachem® Reef Carbonate™

    Discounted Price $6.87 Old Price $13.88
    $6.53
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  • Seachem® Marine Buffer™

    Discounted Price $21.00 Old Price $21.09
    $19.95
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  • Seachem® Tidal ™

    Discounted Price $6.79 Old Price $13.69
    $6.45
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  • Seachem® Tidal ™

    Discounted Price $5.49 Old Price $11.06
    $5.22
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  • Seachem® Reef Complete™

    Discounted Price $10.27 Old Price $20.70
    $9.76
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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.
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