Skip to content

Free Shipping In Canada +$119.00

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.

Compare (0/5)

261 products

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
Red Sea Complete Reef Care Package - Small

Red Sea Complete Reef Care Package - Small

Regular price $101.99
Sale price $101.99 Regular price
ZEOVit Corals Love - 100ml

ZEOVit Corals Love - 100ml

Regular price $53.90
Sale price $53.90 Regular price
ESV B-Ionic Transition Elements Plus+

ESV B-Ionic Transition Elements Plus+ - 8oz

Regular price $18.44
Sale price $18.44 Regular price $13.65
Seachem Safe - 1KG
new

Seachem Safe - 1KG

Regular price $49.80
Sale price $49.80 Regular price
Seachem Bottle Adapters - Small

Seachem Bottle Adapters - Small

Regular price $5.30
Sale price $5.30 Regular price
Brightwell Aquatics MicroBacter Start XLF - 2 Liter

Brightwell Aquatics MicroBacter Start XLF - 2 Liter

Regular price $90.35
Sale price $90.35 Regular price
Brightwell Aquatics Razor Freshwater - 500ml

Brightwell Aquatics Razor Freshwater - 500ml

Regular price $25.80
Sale price $25.80 Regular price
Aqueon AquaPacs Ammonia Reducer - 12 Pack

Aqueon AquaPacs Ammonia Reducer - 12 Pack

Regular price $13.45
Sale price $13.45 Regular price
Dennerle Catappa Leaves

Dennerle Catappa Leaves

Regular price $21.60
Sale price $21.60 Regular price
Seachem Catappa Tea Bags - 12 Pack
new

Seachem Catappa Tea Bags - 12 Pack

Regular price $8.70
Sale price $8.70 Regular price
Seachem Bottle Adapters - Medium

Seachem Bottle Adapters - Medium

Regular price $5.30
Sale price $5.30 Regular price
Aqueon AquaPacs Water Clarifier - 4 Pack

Aqueon AquaPacs Water Clarifier - 4 Pack

Regular price $6.50
Sale price $6.50 Regular price $7.65
Seachem Reef Iron - 500ml
new

Seachem Reef Iron - 500ml

Regular price $15.05
Sale price $15.05 Regular price
Brightwell Aquatics Razor Freshwater - 250ml

Brightwell Aquatics Razor Freshwater - 250ml

Regular price $14.71
Sale price $14.71 Regular price $17.30
Aqueon AquaPacs Sludge Remover - 12 Pack

Aqueon AquaPacs Sludge Remover - 12 Pack

Regular price $11.43
Sale price $11.43 Regular price $13.45
Aqueon AquaPacs Ammonia Reducer - 4 Pack

Aqueon AquaPacs Ammonia Reducer - 4 Pack

Regular price $7.65
Sale price $7.65 Regular price
Seachem Cichlid Trace - 500ml
new

Seachem Cichlid Trace - 500ml

Regular price $14.45
Sale price $14.45 Regular price
Brightwell Aquatics MicroBacter7 - 4 Liter
new

Brightwell Aquatics MicroBacter7 - 4 Liter

Regular price $129.00
Sale price $129.00 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.