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Additives

Additives

Aquarium Specialty offers marine and freshwater from all of the top additives companies from brands such as Brightwell Aquatics, Zeovit, DVH, ESV,Triton Labs, Red Sea, & Two Little Fishies to name a few. If you need help choosing aquarium additives that are best for your aquarium needs then please give us a call or email us. We are here to help.

First Time Customers Use Coupon Code: WELCOMEExtra 10% With Account Checkout to Save 10%
15% Off Hanna Instruments & 20% Off ATI Straton LED Lights.

Items 109-144 of 230

Set Descending Direction
  1. Seachem Reef Buffer

    Seachem Reef Buffer

    Starting at: $6.05
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  2. Seachem Reef Carbonate

    Seachem Reef Carbonate

    Starting at: $6.14
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  3. Seachem Reef Fusion 1

    Seachem Reef Fusion 1

    Starting at: $7.23
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  4. Seachem Reef Fusion 2

    Seachem Reef Fusion 2

    Starting at: $7.23
    See Individual Item
    Add to Wish List
  5. Seachem Reef Advantage Calcium

    Seachem Reef Advantage Calcium

    Starting at: $7.28
    Usually Ships in 1 - 2 Business Days After Submission of Order
    Add to Wish List
  6. Seachem Purigen

    Seachem Purigen

    Starting at: $8.05
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  7. Seachem Reef Strontium

    Seachem Reef Strontium

    Starting at: $5.98
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  8. PolypLab Reef-resh Complete

    PolypLab Reef-resh Complete

    Starting at: $21.24
    See Individual Item
    Add to Wish List
  9. Red Sea Reef Foundation B Alkalinity

    Red Sea Reef Foundation B Alkalinity

    Starting at: $19.99
    See Individual Item
    Add to Wish List
  10. Tropic Marin Bio-Calcium

    Tropic Marin Bio-Calcium

    Starting at: $10.00
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  11. CaribSea Purple Up

    CaribSea Purple Up

    Starting at: $7.61
    See Individual Item
    Add to Wish List
  12. Two Little Fishies Iron Concentrate

    Two Little Fishies Iron Concentrate

    Starting at: $7.49
    See Individual Item
    Add to Wish List
  13. Fauna Marin Organic

    Fauna Marin Organic

    Starting at: $39.99
    See Individual Item
    Add to Wish List
  14. Kent Marine Tech M Magnesium

    Kent Marine Tech M Magnesium

    Starting at: $6.79
    See Individual Item
    Add to Wish List
  15. Brightwell Aquatics PhytõGold-M

    Brightwell Aquatics PhytõGold-M

    Starting at: $6.80
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  16. MECoral Liquid Alkalinity

    MECoral Liquid Alkalinity

    Starting at: $12.00
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  17. American Marine Selcon

    American Marine Selcon

    Starting at: $12.74
    See Individual Item
    Add to Wish List
  18. PolypLab One

    PolypLab One

    Starting at: $11.04
    See Individual Item
    Add to Wish List
  19. Prodibio BioDigest

    Prodibio BioDigest

    Starting at: $17.30
    See Individual Item
    Add to Wish List
  20. Brightwell Aquatics Reef Code A

    Brightwell Aquatics Reef Code A

    Starting at: $3.95
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  21. Brightwell Aquatics Erase-Cl

    Brightwell Aquatics Erase-Cl

    Starting at: $4.35
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  22. Brightwell Aquatics pH+ Liquid pH Increaser

    Brightwell Aquatics pH+ Liquid pH Increaser

    Starting at: $6.52
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  23. Brightwell Aquatics Reef Snow

    Brightwell Aquatics Reef Snow

    Starting at: $7.23
    This product will be back ordered
    Add to Wish List
  24. Brightwell Aquatics Strontion - Liquid

    Brightwell Aquatics Strontion - Liquid

    Starting at: $10.60
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  25. Brightwell Aquatics Regenerãt-PHOR

    Brightwell Aquatics RegeneratPHOR

    Special Price $8.99 Regular Price $11.99
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  26. Brightwell Aquatics Ferrion

    Brightwell Aquatics Ferrion

    Starting at: $13.95
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  27. Brightwell Aquatics Calcion

    Brightwell Aquatics Calcion

    Starting at: $15.20
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  28. Brightwell Aquatics PhosphatR

    Brightwell Aquatics PhosphatR

    Order by 3:30pm EST for Same Day Shipping (M-F)
    Out of stock
    Add to Wish List
  29. Korallen-Zucht Zeovit Zeostart 3

    Korallen-Zucht Zeovit Zeostart 3

    Starting at: $19.54
    See Individual Item
    Add to Wish List
  30. Korallen-Zucht CyanoClean

    Korallen-Zucht CyanoClean

    Starting at: $59.49
    Usually Ships in 1 - 2 Business Days After Submission of Order
    Add to Wish List
  31. DVH BioGro 123 Marine

    DVH BioGro 123 Marine

    Starting at: $24.64
    Order by 3:30pm EST for Same Day Shipping (M-F)
    Add to Wish List
  32. Kent Marine Garlic Xtreme

    Kent Marine Garlic Xtreme

    Starting at: $11.89
    See Individual Item
    Add to Wish List
  33. Two Little Fishies MarineSnow

    Two Little Fishies MarineSnow

    Starting at: $9.20
    See Individual Item
    Add to Wish List
  34. API Accu-Clear

    API Accu-Clear

    Starting at: $3.73
    See Individual Item
    Add to Wish List
  35. API Stress Zyme Supplement

    API Stress Zyme Supplement

    Starting at: $5.09
    See Individual Item
    Add to Wish List
  36. API AlgaeFix Freshwater Aquarium Algaecide

    API AlgaeFix Freshwater Aquarium Algaecide

    Starting at: $5.92
    See Individual Item
    Add to Wish List
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