Skip to content

Free shipping on orders over $99* (Exclusions Apply)

Get 5% off your first order! Join our newsletter now!

Aquariums
Aquarium Essentials
- 3D Printed Accessories
- Accessories
  
  All Accessories
  Traps
  Thermometers
- Additives & Supplements
- Controllers & Accessories
- Dosing Equipment
- Filters & Filter Media
  
  All Filters & Filter Media
  Filters
  Filter Media
  Filter Replacement Cartridges
  Filter Socks
  Filter Media Baskets
- Food & Feeding Equipment
  
  All Food & Feeding Equipment
  Marine Foods
  Coral Foods
  Live Foods
  Flakes
  Pellets
  Seaweed
  Feeding Equipment
- Heaters & Chillers
  
  All Heaters & Chillers
  Heaters
  Chillers
- Lighting
  
  All Lighting
  Lighting Accessories
  Lamps & Bulbs
  Light Fixtures
- Maintenance Equipment
- Medications
- Plumbing
  
  All Plumbing
  Flexible Ball-Socket Joint Tubing
  Bulkheads
  PVC Valves
  PVC Unions
  PVC Pipe
  PVC Fittings
  PVC Reducers
  PVC Barb Fittings
- Protein Skimmers & Reactors
  
  All Protein Skimmers & Reactors
  Protein Skimmers
  Media Reactors & Media
- Pumps
  
  All Pumps
  Impellers
  Replacement Parts
- Reverse Osmosis (RO/DI)
  
  All Reverse Osmosis (RO/DI)
  Reverse Osmosis Fittings
- Rocks
- Substrates
- Sump Equipment
  
  All Sump Equipment
  Auto Top Off
- Water Testing Equipment
- Wavemakers & Powerheads
Corals
- SPS Corals
  
  Acropora
  Montipora
  Seriatopora
  Stylocoeniella
  Other SPS
- LPS Coral
  
  Acanthastrea
  Blastomussa
  Chalice
  Cyphastrea
  Elegance
  Euphyllia
  Favites
  Goniopora
  Leptos
  Lobophyllia
  Plate Corals
  Trachyphyllia
  Other LPS
- Soft Corals
  
  Zoanthids
  Mushrooms
  Gorgonians
- WYSIWYG
Saltwater Fish
Invertebrates
Reptile Essentials
Services
Contact Us

Country/region

Canada CAD $
United States USD $

Facebook
Instagram
TikTok
YouTube

Search

Aquariums
Aquarium Essentials
Corals
Saltwater Fish
Invertebrates
Reptile Essentials
Services
Contact Us

Item added to your cart

View cart

Collection: Aquarium Additives & Supplements

Sort by:

587 products

Filter:

Brand (0)

Brand

American Marine Inc (1 product)
API (4 products)
Aquaforest (33 products)
Aquarium Depot (2 products)
Aquavitro (10 products)
Aqueon (3 products)
ATI (20 products)
Blue Life USA (1 product)
Boyd Enterprises (6 products)
Brightwell Aquatics (139 products)
DrTim’s Aquatics (52 products)
E.S.V. (20 products)
Fauna Marin (63 products)
Fluval (1 product)
Fritz Aquatics (21 products)
Korallen-Zucht (7 products)
Majano Wand (1 product)
NYOS (9 products)
Polyp Lab (12 products)
Red Sea (2 products)
Reef Brite (1 product)
Reef Moonshiners (18 products)
Salifert (1 product)
Seachem (120 products)
Tropic Marin (27 products)
Two Little Fishies (11 products)
Weco (2 products)

Availability (0)

Availability

In stock (552 products)
Out of stock (35 products)

Price

The highest price is $489.99

$

From

To

Qualify for Free Shipping (0)

Qualify for Free Shipping

Yes (540 products)
No (16 products)

Same Day Delivery (0)

Same Day Delivery

Yes (444 products)

Special Order (0)

Special Order

Yes (5 products)

Filter and sort Filter

Filter and sort

Filter

587 products

Brand

American Marine Inc (1 products)
API (4 products)
Aquaforest (33 products)
Aquarium Depot (2 products)
Aquavitro (10 products)
Aqueon (3 products)
ATI (20 products)
Blue Life USA (1 products)
Boyd Enterprises (6 products)
Brightwell Aquatics (139 products)
DrTim’s Aquatics (52 products)
E.S.V. (20 products)
Fauna Marin (63 products)
Fluval (1 products)
Fritz Aquatics (21 products)
Korallen-Zucht (7 products)
Majano Wand (1 products)
NYOS (9 products)
Polyp Lab (12 products)
Red Sea (2 products)
Reef Brite (1 products)
Reef Moonshiners (18 products)
Salifert (1 products)
Seachem (120 products)
Tropic Marin (27 products)
Two Little Fishies (11 products)
Weco (2 products)

Clear

Availability

In stock (552 products)
Out of stock (35 products)

Clear

Price

The highest price is $489.99

$

From

$

To

Clear

Qualify for Free Shipping

Yes (540 products)
No (16 products)

Clear

Same Day Delivery

Yes (444 products)

Clear

Special Order

Yes (5 products)

Clear

Sort by:

Remove all

587 products

Brightwell Aquatics NanoCode B 500ml

Brightwell Aquatics NanoCode B 500ml

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*
- Same Day Delivery in GTA*

Regular price $17.64

Regular price Sale price $17.64
Unit price per
Brightwell Aquatics Potassion-P - 600g

Sold out

Brightwell Aquatics Potassion-P - 600g

Vendor:
Brightwell Aquatics
- Backordered
- Shipping charges apply

Regular price $41.34

Regular price Sale price $41.34
Unit price per

Sold out
Brightwell Aquatics RedoxIclean 500ml

Brightwell Aquatics RedoxIclean 500ml

Vendor:
Brightwell Aquatics
- Backordered
- Ships free on eligible orders*

Regular price $21.05

Regular price Sale price $21.05
Unit price per
Brightwell Aquatics Reef Snow 500 ml

Brightwell Aquatics Reef Snow 500 ml

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*
- Same Day Delivery in GTA*

Regular price $26.38

Regular price Sale price $26.38
Unit price per
Brightwell Aquatics SpongExcel - Silica Solution 2oz

Brightwell Aquatics SpongExcel - Silica Solution 2oz

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*
- Same Day Delivery in GTA*

Regular price $11.49

Regular price Sale price $11.49
Unit price per
Brightwell Aquatics SpongExcel - Silica Solution 4oz

Sold out

Brightwell Aquatics SpongExcel - Silica Solution 4oz

Vendor:
Brightwell Aquatics
- Backordered
- Ships free on eligible orders*

Regular price $17.75

Regular price Sale price $17.75
Unit price per

Sold out
Brightwell Aquatics Strontion-P - 300g

Brightwell Aquatics Strontion-P - 300g

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*

Regular price $32.82

Regular price Sale price $32.82
Unit price per
Brightwell Aquatics UltraPlanktos-P 500ml

Brightwell Aquatics UltraPlanktos-P 500ml

Vendor:
Brightwell Aquatics
- Backordered
- Ships free on eligible orders*

Regular price $26.38

Regular price Sale price $26.38
Unit price per
Brightwell Aquatics UltraPlanktos-Z 500ml

Brightwell Aquatics UltraPlanktos-Z 500ml

Vendor:
Brightwell Aquatics
- Backordered
- Ships free on eligible orders*

Regular price $26.38

Regular price Sale price $26.38
Unit price per
Brightwell Blackwater Conditioner for Freshwater Aquaria 250 ml

Brightwell Blackwater Conditioner for Freshwater Aquaria 250 ml

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*

Regular price $10.60

Regular price Sale price $10.60
Unit price per
Brightwell Blackwater Conditioner for Freshwater Aquaria 500 ml

Brightwell Blackwater Conditioner for Freshwater Aquaria 500 ml

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*

Regular price $17.17

Regular price Sale price $17.17
Unit price per
Brightwell BoroChrom Concentrated Boron Supplement - 500ml

Brightwell BoroChrom Concentrated Boron Supplement - 500ml

Vendor:
Aquarium Depot
- In Stock
- Ships free on eligible orders*

Regular price $10.80

Regular price Sale price $10.80
Unit price per
Brightwell Calcion Concentrated Calcium Supplement 17oz

Brightwell Calcion Concentrated Calcium Supplement 17oz

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*
- Same Day Delivery in GTA*

Regular price $20.29

Regular price Sale price $20.29
Unit price per
Brightwell Calcion-P Calcium Powder Supplement 800g

Brightwell Calcion-P Calcium Powder Supplement 800g

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*

Regular price $35.82

Regular price Sale price $35.82
Unit price per
Brightwell ChaetoGro Refugium Fertilizer - 500ml

Sold out

Brightwell ChaetoGro Refugium Fertilizer - 500ml

Vendor:
Brightwell Aquatics
- Backordered
- Ships free on eligible orders*

Regular price $26.38

Regular price Sale price $26.38
Unit price per

Sold out
Brightwell CichlidCode trace mineral supplement African Cichlids 125ml-4oz

Brightwell CichlidCode trace mineral supplement African Cichlids 125ml-4oz

Vendor:
Brightwell Aquatics
- Backordered
- Ships free on eligible orders*

Regular price $10.60

Regular price Sale price $10.60
Unit price per
Brightwell CichlidCode Trace Mineral Supplement for African Cichlids 500 ml

Brightwell CichlidCode Trace Mineral Supplement for African Cichlids 500 ml

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*

Regular price $17.17

Regular price Sale price $17.17
Unit price per
Brightwell CoralAmino Free-Form Coral Amino Complex 17oz

Brightwell CoralAmino Free-Form Coral Amino Complex 17oz

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*
- Same Day Delivery in GTA*

Regular price $72.55

Regular price Sale price $72.55
Unit price per
Brightwell CoralAmino Free-Form Coral Amino Complex 1oz

Brightwell CoralAmino Free-Form Coral Amino Complex 1oz

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*
- Same Day Delivery in GTA*

Regular price $23.31

Regular price Sale price $23.31
Unit price per
Brightwell CoralAmino Free-Form Coral Amino Complex 2oz

Brightwell CoralAmino Free-Form Coral Amino Complex 2oz

Vendor:
Brightwell Aquatics
- In Stock
- Ships free on eligible orders*
- Same Day Delivery in GTA*

Regular price $36.23

Regular price Sale price $36.23
Unit price per

1
…
5
6
7
8
9
…
30

Quick links

Terms & Conditions
USA & International Orders
Shipping Policy
Livestock Policies
How we care for our fish
AD Same Day Delivery
Privacy Policy
Product Warranty
SMS Exclusive Discounts
Contact Us

Facebook
Instagram
YouTube
TikTok

Country/region

Canada CAD $
United States USD $

Payment methods

© 2025, Aquarium Depot

Refund policy
Privacy policy
Terms of service
Shipping policy

Choosing a selection results in a full page refresh.
Opens in a new window.