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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. Dose to a test result rather than to a schedule.

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260 products

ZEOVit Trace Element Complex - 500ml

ZEOVit Trace Element Complex - 500ml

3.0 out of 5 stars, 1 review
Regular price $41.30
Sale price $41.30 Regular price
AquaForest Component B - 250ml

AquaForest Component B - 250ml

Regular price $8.98
Sale price $8.98 Regular price $11.95
Brightwell Aquatics FlorinBacter7

Brightwell Aquatics FlorinBacter7 - 250ml

Regular price $13.92
Sale price $13.92 Regular price $17.90
ZEOVit ZEOStart 3 - 500ml

ZEOVit ZEOStart 3 - 500ml

Regular price $96.40
Sale price $96.40 Regular price
Seachem Catappa Tea Bags - 12 Pack
new

Seachem Catappa Tea Bags - 12 Pack

Regular price $8.90
Sale price $8.90 Regular price
Brightwell Aquatics ForinBacter One

Brightwell Aquatics ForinBacter One - 250ml

Regular price $17.90
Sale price $17.90 Regular price
Seachem Safe - 1KG
new

Seachem Safe - 1KG

Regular price $50.95
Sale price $50.95 Regular price
ZEOVit Corals Love - 250ml

ZEOVit Corals Love - 250ml

Regular price $89.50
Sale price $89.50 Regular price
Seachem Laboratories Seachem

Seachem Marine Buffer - 4 KG

Regular price $67.36
Sale price $67.36 Regular price $98.85
Tropica Aquarium Plants Tropica

Tropica Nutrition Capsules - 50 Pack

Regular price $42.25
Sale price $42.25 Regular price
Brightwell Aquatics NeoZeo Zeolite Filter Media

Brightwell Aquatics NeoZeo Zeolite Filter Media - 1 KG

Regular price $20.75
Sale price $20.75 Regular price
Seachem Reef Builder - 4 KG

Seachem Reef Builder - 4 KG

Regular price $98.85
Sale price $98.85 Regular price
Brightwell Aquatics VitamarinF - 250ml

Brightwell Aquatics VitamarinF - 250ml

Regular price $30.55
Sale price $30.55 Regular price
Seachem Reef Phosphorus - 500ml

Seachem Reef Phosphorus - 500ml

Regular price $15.25
Sale price $15.25 Regular price
Brightwell Aquatics Shrimp FlorinGro+

Brightwell Aquatics Shrimp FlorinGro+ - 250ml

Regular price $12.85
Sale price $12.85 Regular price
Brightwell Reef Code B-P Alkalinity Additive - 4KG

Brightwell Aquatics Reef Code B-P Alkalinity Additive - 4KG

Regular price $67.27
Sale price $67.27 Regular price $93.85
Brightwell Aquatics FlorinBacter Clean

Brightwell Aquatics FlorinBacter Clean - 250ml

Regular price $17.85
Sale price $17.85 Regular price
Red Sea Complete Reef Care Package - Medium

Red Sea Complete Reef Care Package - Medium

Regular price $166.99
Sale price $166.99 Regular price
Brightwell Aquatics MicroBacter Start XLF - 500ml

Brightwell Aquatics MicroBacter Start XLF - 500ml

Regular price $32.15
Sale price $32.15 Regular price
Seachem Reef Nitrogen 500ml

Seachem Reef Nitrogen 500ml

Regular price $15.80
Sale price $15.80 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.