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Collection: Additives

Additives for reef, freshwater, and planted aquariums — from calcium, alkalinity, and trace elements to plant fertilizers, bacteria, and water conditioners. Test first, then dose to what the water actually needs.

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261 products

Brightwell Aquatics NeoPhos 5x - 500ml

Brightwell Aquatics NeoPhos 5x - 500ml

Regular price $34.50
Sale price $34.50 Regular price
Two Little Fishies AcroPower Amino Acids - 250ml

Two Little Fishies AcroPower Amino Acids - 250ml

Regular price $18.10
Sale price $18.10 Regular price
Brightwell Kalk +2 - 450 Gram front of package showing instructions and guidelines

Brightwell Aquatics Kalk +2 - 450 Gram

Regular price $31.60
Sale price $31.60 Regular price
AquaForest KH Buffer - 5KG

AquaForest KH Buffer - 5KG

Regular price $52.95
Sale price $52.95 Regular price
Seachem Marine Buffer - 500 Gram

Seachem Marine Buffer - 500 Gram

Regular price $16.85
Sale price $16.85 Regular price
Brightwell MicroBacter Clean - 2 Litre

Brightwell Aquatics MicroBacter Clean - 2 Litre

Regular price $100.00
Sale price $100.00 Regular price
Tropica Premium Fertilizer - 125ml

Tropica Premium Fertilizer - 125ml

Regular price $7.95
Sale price $7.95 Regular price
Seachem Laboratories Seachem

Seachem Cichlid Lake Salt - 500 Gram

Regular price $16.20
Sale price $16.20 Regular price
ZEOVit ZEObak - 50ml

ZEOVit ZEObak - 50ml

Regular price $98.45
Sale price $98.45 Regular price
Reef Crest Aquatics Reef Crest

Reef Crest Bulk Sodium Bicarbonate (3600 Gram)

Regular price $50.95
Sale price $50.95 Regular price
ZEOVit Flatworm Stop - 250ml

ZEOVit Flatworm Stop - 250ml

Regular price $67.40
Sale price $67.40 Regular price
Seachem Reef Builder - 600 Gram

Seachem Reef Builder - 600 Gram

Regular price $16.85
Sale price $16.85 Regular price
FritzZyme 7 Freshwater Nitrifying Bacteria - 32oz

FritzZyme 7 Freshwater Nitrifying Bacteria - 32oz

Regular price $28.35
Sale price $28.35 Regular price
Brightwell Aquatics NeoNitro 5x - 500ml

Brightwell Aquatics NeoNitro 5x - 500ml

Regular price $34.50
Sale price $34.50 Regular price
AquaForest Calcium - 3.5KG

AquaForest Calcium - 3.5KG

Regular price $49.95
Sale price $49.95 Regular price
Red Sea Reef Foundation ABC Starter Pack 3x250ml

Red Sea Reef Foundation ABC Starter Pack 3x250ml

Regular price $47.99
Sale price $47.99 Regular price
Brightwell Aquatics Coralline Accelerator - 500mL

Brightwell Aquatics Coralline Accelerator - 500ml

Regular price $32.30
Sale price $32.30 Regular price
Reef Crest Bulk Sodium Bicarbonate (1800 Gram)

Reef Crest Bulk Sodium Bicarbonate (1800 Gram)

Regular price $27.20
Sale price $27.20 Regular price
Ferrion Aquarium Additive- 500ml

Brightwell Aquatics Ferrion - 500ml

Regular price $17.90
Sale price $17.90 Regular price
FritzZyme 7 Freshwater Nitrifying Bacteria - 16oz

FritzZyme 7 Freshwater Nitrifying Bacteria - 16oz

Regular price $15.95
Sale price $15.95 Regular price

Why Your Aquarium Needs Dosing

Every tank consumes something. Reef systems burn through calcium, alkalinity, and magnesium as corals grow; planted tanks deplete iron and macronutrients; a new setup needs bacteria before it can hold livestock. The right additive depends on what you keep and what your test kit tells you. We stock additives from Seachem, Red Sea, Brightwell, Aquaforest, Tropic Marin, ESV, API, Fritz, Dennerle, and Tropica — covering both the reef and freshwater/planted sides of the hobby.

Sort by What You Keep

  • Reef & marine — calcium, alkalinity, and magnesium supplements, plus trace elements and ZEOvit-system dosing.
  • Freshwater & planted — complete and iron-based fertilizers, root tabs, and liquid carbon.
  • Cycling & bacteria — nitrifying bacteria and cycling accelerators for new tanks.
  • Water conditioners — dechlorinators and tap-water conditioners for every water change.

Not sure what your tank is short on? Test first, dose second — chasing numbers you haven't measured is how most tanks get out of balance. Email info@jlaquatics.com if you want a hand matching a regimen to your setup. J&L has supplied Canadian aquarists since 1997.

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.