Saltwater Logo
Freshwater Logo

FREE Shipping Over $49

| Earn Reward Points
Menu
My Cart
Close

Quick Links

Menu
0% APR Financing with Affirm 0% APR Financing with Affirm

Additives by Brand

Loading...
Set Descending Direction

444 Items

  1. 2-Part Pharma Calcium & Alkalinity Starter Package
    7 Reviews
    Bulk Reef Supply
    2-Part Pharma Calcium & Alkalinity Starter Package
    $54.99

    $54.99
    Add to Cart
  2. Coral System - 1L Package
    1 Review
    Korallen-Zucht
    Coral System - 1L Package
    $220.09

    $220.09
    Add to Cart
  3. Nano Power Package
    29 Reviews
    Korallen-Zucht
    Nano Power Package
    $50.09

    $50.09
  4. Reef Energy Plus (AB+) All-In-One Coral Superfood
    19 Reviews
    Red Sea
    Reef Energy Plus (AB+) All-In-One Coral Superfood

    Starting at: $20.49

    Choose Options Notify Me When In-Stock
  5. NO3:PO4-X Nitrate & Phosphate Reducer
    46 Reviews
    Red Sea
    NO3:PO4-X Nitrate & Phosphate Reducer

    Starting at: $23.99

    Choose Options Notify Me When In-Stock
  6. 64 oz. Package - ESV B-Ionic Calcium Buffer System
    ESV Aquarium Products Inc.
    64 oz. Package - ESV B-Ionic Calcium Buffer System
    $29.99

    $29.99
  7. Pohl’s Xtra Special
    15 Reviews
    Korallen-Zucht
    Pohl’s Xtra Special

    Starting at: $22.99

    Choose Options Notify Me When In-Stock
  8. MicroBacter7 - Complete Bioculture
    18 Reviews
    Brightwell Aquatics
    MicroBacter7 - Complete Bioculture

    Starting at: $7.59

    Choose Options Notify Me When In-Stock
  9. Pohl’s Coral Vitalizer
    29 Reviews
    Korallen-Zucht
    Pohl’s Coral Vitalizer

    Starting at: $14.09

    Choose Options Notify Me When In-Stock
  10. ZEObak Microorganism Solution
    27 Reviews
    Korallen-Zucht
    ZEObak Microorganism Solution

    Starting at: $18.99

    Choose Options Notify Me When In-Stock
  11. Amino Acid Concentrate
    12 Reviews
    Korallen-Zucht
    Amino Acid Concentrate

    Starting at: $50.09

    Choose Options Notify Me When In-Stock
  12. Bulk Pharma Calcium Chloride 7 Pounds
    134 Reviews
    Bulk Reef Supply
    Bulk Pharma Calcium Chloride 7 Pounds
    $39.99

    $39.99
  13. Component 1+, 2+, 3+ Bundle
    20 Reviews
    Aquaforest
    Component 1+, 2+, 3+ Bundle
    $62.69

    $62.69
  14. ATI ICP-OES Water Analysis
    3 Reviews
    ATI
    ATI ICP-OES Water Analysis
    $44.95

    $44.95
  15. FlorinBacter Clean (250 mL)
    Brightwell Aquatics
    FlorinBacter Clean (250 mL)
    $11.28

    $11.28
  16. Bulk Pharma Calcium Chloride 35 Pounds
    5 Reviews
    Bulk Reef Supply
    Bulk Pharma Calcium Chloride 35 Pounds
    $199.99

    $199.99
  17. Bulk Pharma Soda Ash 7 Pounds
    69 Reviews
    Bulk Reef Supply
    Bulk Pharma Soda Ash 7 Pounds
    $39.99

    $39.99
  18. Pharma Magnesium Mix for 2-Part Maintenance
    43 Reviews
    Bulk Reef Supply
    Pharma Magnesium Mix for 2-Part Maintenance
    $19.99

    $19.99
  19. Bulk Pharma Magnesium Chloride 7 Pounds
    77 Reviews
    Bulk Reef Supply
    Bulk Pharma Magnesium Chloride 7 Pounds
    $29.99

    $29.99
  20. Pharma Calcium Chloride 1-Gallon Mix (Single Use)
    Bulk Reef Supply
    Pharma Calcium Chloride 1-Gallon Mix (Single Use)
    $8.99

    $8.99
  21. Pharma Soda Ash 1 Gallon Mix (Single Use)
    2 Reviews
    Bulk Reef Supply
    Pharma Soda Ash 1 Gallon Mix (Single Use)
    $8.99

    $8.99
  22. KM-120 Magnetic Kalkwasser Mixing Reactor
    6 Reviews
    IceCap
    KM-120 Magnetic Kalkwasser Mixing Reactor
    $311.84

    $311.84
  23. Lugol's Solution - Advanced Iodine
    9 Reviews
    Brightwell Aquatics
    Lugol's Solution - Advanced Iodine
    $16.38

    $16.38
  24. Bulk Pharma Kalkwasser (38 Pounds)
    Bulk Reef Supply
    Bulk Pharma Kalkwasser (38 Pounds)
    $269.99

    $269.99
  25. Reef Flux Fluconazole Treatment
    28 Reviews
    ReefHD
    Reef Flux Fluconazole Treatment
    $16.99

    $16.99
  26. Bulk Pharma Magnesium Chloride 35 Pounds
    Bulk Reef Supply
    Bulk Pharma Magnesium Chloride 35 Pounds
    $189.99

    $189.99
  27. AF Lab Components Pro (3 x 5L)
    1 Review
    Aquaforest
    AF Lab Components Pro (3 x 5L)
    $124.99

    $124.99
  28. Core7 Base Elements 5L Set Method
    Triton
    Core7 Base Elements 5L Set Method
    $219.00

    $219.00
  29. Flatworm Exit Aquarium Treatment
    24 Reviews
    Salifert
    Flatworm Exit Aquarium Treatment
    $16.99

    $16.99
  30. RedSea Trace Colors ABCD 4-Pack
    21 Reviews
    Red Sea
    RedSea Trace Colors ABCD 4-Pack
    $27.99

    $27.99
  31. KM-200 Magnetic Kalkwasser Mixing Reactor
    1 Review
    IceCap
    KM-200 Magnetic Kalkwasser Mixing Reactor
    $438.89

    $438.89
  32. 250mL Reef Foundation Package (Ca/Alk/Mag)
    7 Reviews
    Red Sea
    250mL Reef Foundation Package (Ca/Alk/Mag)
    $28.99

    $28.99
  33. Bulk Pharma Sodium Bicarbonate 7 Pounds
    22 Reviews
    Bulk Reef Supply
    Bulk Pharma Sodium Bicarbonate 7 Pounds
    $39.99

    $39.99
  34. Polyp-Booster
    11 Reviews
    PolypLab
    Polyp-Booster
    $21.99

    $21.99
  35. KM-150 Magnetic Kalkwasser Mixing Reactor
    5 Reviews
    IceCap
    KM-150 Magnetic Kalkwasser Mixing Reactor
    $381.14

    $381.14
  36. Chemi Clean Red Cyano Remover - Liquid
    15 Reviews
    Boyd Enterprises
    Chemi Clean Red Cyano Remover - Liquid
    $26.99

    $26.99
  37. ZEOvit Media (1000 mL)
    17 Reviews
    Korallen-Zucht
    ZEOvit Media (1000 mL)
    $16.09

    $16.09
  38. RedSea Trace Colors Pro Multi Test Kit (I2,K,Fe)
    17 Reviews
    Red Sea
    RedSea Trace Colors Pro Multi Test Kit (I2,K,Fe)
    $84.99

    $84.99
  39. RedSea Trace Colors A (Iodine/Halogens) - 500 mL
    8 Reviews
    Red Sea
    RedSea Trace Colors A (Iodine/Halogens) - 500 mL
    $19.99

    $19.99
  40. Bulk Pharma Magnesium Sulfate 7 Pounds
    46 Reviews
    Bulk Reef Supply
    Bulk Pharma Magnesium Sulfate 7 Pounds
    $29.99

    $29.99