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Collection: Seachem Additives

Every Seachem additive we carry, gathered on one page. Planted and freshwater keepers will find the Flourish fertilizer line, root tabs and the pH and hardness buffers; every tank can use Prime, Stability and the other conditioners; and reef keepers get the calcium, alkalinity, magnesium and trace supplements. The four Seachem sub-categories in the Additives menu split the range the same way. Most products come in two or more sizes, from 100 mL trial bottles up to 4 litre jugs and 4 kg tubs.

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66 products

SeaChem Prime - 500 mL

Seachem Prime - 500 mL

Regular price $24.75
Sale price $24.75 Regular price
Seachem Flourish front of bottle

Seachem Flourish - 500ml

Regular price $15.10
Sale price $15.10 Regular price
Seachem Prime - 250 mL

Seachem Prime - 250 mL

Regular price $13.00
Sale price $13.00 Regular price
Seachem Flourish Tabs - 40 Pack

Seachem Flourish Tabs - 40 Pack

Regular price $37.25
Sale price $37.25 Regular price
SeaChem Prime - 100 mL

Seachem Prime - 100 mL

Regular price $6.40
Sale price $6.40 Regular price
SeaChem Stability - 500ml

Seachem Stability - 500ml

Regular price $22.55
Sale price $22.55 Regular price
Seachem Laboratories Seachem

Seachem Stability - 250ml

Regular price $11.90
Sale price $11.90 Regular price
seachem flourish excel 500ml front of  bottle

Seachem Flourish Excel - 500ml

Regular price $15.10
Sale price $15.10 Regular price
Seachem Flourish Potassium - 500ml

Seachem Flourish Potassium - 500ml

Regular price $15.65
Sale price $15.65 Regular price
Seachem Equilibrium - 600 Gram

Seachem Equilibrium - 600 Gram

Regular price $17.50
Sale price $17.50 Regular price
Seachem Flourish Tabs - 10 Pack

Seachem Flourish Tabs - 10 Pack

Regular price $12.40
Sale price $12.40 Regular price
seachem flourish excel front of 2 litre bottle

Seachem Flourish Excel - 2 Litre

Regular price $53.75
Sale price $53.75 Regular price
Seachem Prime - 2 Litre

Seachem Prime - 2 Litre

Regular price $77.55
Sale price $77.55 Regular price
Seachem Flourish Iron - 500ml

Seachem Flourish Iron - 500ml

Regular price $15.65
Sale price $15.65 Regular price
Seachem Flourish Phosphorus - 500ml

Seachem Flourish Phosphorus - 500ml

Regular price $15.65
Sale price $15.65 Regular price
Seachem Stability - 2 Litre

Seachem Stability - 2 Litre

Regular price $71.60
Sale price $71.60 Regular price
Seachem Reef Trace - 500 mL

Seachem Reef Trace - 500 mL

Regular price $15.80
Sale price $15.80 Regular price
Seachem Prime - 4 Litre

Seachem Prime - 4 Litre

Regular price $132.40
Sale price $132.40 Regular price
Seachem Flourish Nitrogen - 500ml

Seachem Flourish Nitrogen - 500ml

Regular price $15.65
Sale price $15.65 Regular price
SeaChem Pristine - 500ml

Seachem Pristine - 500ml

Regular price $25.95
Sale price $25.95 Regular price

How the Seachem range is split

  • Freshwater & Planted – Flourish and its single-nutrient bottles, Flourish Excel, Flourish Tabs, and buffers for pH and general hardness.
  • Specialized & Problem Solvers – Prime, Safe, Stability, Pristine, Clarity and AmGuard, plus Reef Nitrogen and Reef Phosphorus for reefs running too low on nitrate and phosphate.
  • Major Elements – Reef Builder, Reef Carbonate, Reef Calcium, Reef Advantage Calcium and Magnesium, and the marine pH buffers.
  • Trace Elements – Reef Trace, Reef Potassium and Reef Iron.

Liquid or powder

Many Seachem supplements come in both forms. Liquids such as Reef Calcium and Reef Carbonate are easy to measure in small doses and suit dosing pumps. Powders such as Reef Builder and Reef Advantage Calcium are dissolved before dosing and suit larger systems that need bigger doses.

Picking a size

Prime, Stability and Flourish Excel all come in 2 and 4 litre sizes for multi-tank setups and large water changes. Start with a small bottle while you settle on a dose, then move to the bigger size once it is part of your routine.

J&L Aquatics was formed in December 1997

Our business was started from our love of the aquarium hobby. We at J&L Aquatics felt that the Canadian aquarist should have the option to purchase top quality supplies, equipment and livestock other than the generally over priced local retail stores.