Add to cart product

VIEW CART

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: Water Testing Equipment

Sort by:

187 products

Filter:

Brand (0)

Brand

American Marine Inc (17 products)
API (17 products)
Aquaforest (6 products)
Aquarium Depot (4 products)
Aquarium Munster (1 product)
ATI (1 product)
AutoAqua (2 products)
Brightwell Aquatics (2 products)
Fauna Marin (3 products)
Focustronic (6 products)
Hanna (66 products)
HM Digital (5 products)
HYDROS (1 product)
IceCap (1 product)
Instant Ocean (1 product)
Milwaukee Instruments (14 products)
Neptune Systems (6 products)
Oceamo (1 product)
Red Sea (6 products)
Salifert (12 products)
Seachem (11 products)
Tropic Marin (4 products)

Availability (0)

Availability

In stock (176 products)
Out of stock (11 products)

Price

The highest price is $1,899.99

$

From

To

Qualify for Free Shipping (0)

Qualify for Free Shipping

Yes (186 products)
No (1 product)

Same Day Delivery (0)

Same Day Delivery

Yes (144 products)

Special Order (0)

Special Order

Yes (5 products)
No (1 product)

Filter and sort Filter

Filter and sort

Filter

187 products

Brand

American Marine Inc (17 products)
API (17 products)
Aquaforest (6 products)
Aquarium Depot (4 products)
Aquarium Munster (1 products)
ATI (1 products)
AutoAqua (2 products)
Brightwell Aquatics (2 products)
Fauna Marin (3 products)
Focustronic (6 products)
Hanna (66 products)
HM Digital (5 products)
HYDROS (1 products)
IceCap (1 products)
Instant Ocean (1 products)
Milwaukee Instruments (14 products)
Neptune Systems (6 products)
Oceamo (1 products)
Red Sea (6 products)
Salifert (12 products)
Seachem (11 products)
Tropic Marin (4 products)

Clear

Availability

In stock (176 products)
Out of stock (11 products)

Clear

Price

The highest price is $1,899.99

$

From

$

To

Clear

Qualify for Free Shipping

Yes (186 products)
No (1 products)

Clear

Same Day Delivery

Yes (144 products)

Clear

Special Order

Yes (5 products)
No (1 products)

Clear

Sort by:

Remove all

187 products

Hanna Checker Low Range Ammonia Colorimeter HI700 (Freshwater)

Hanna Checker Low Range Ammonia Colorimeter HI700 (Freshwater)

Vendor:
Hanna
- Backordered
- Ships free on eligible orders*

Regular price $73.99

Regular price Sale price $73.99
Unit price per
Hanna Checker Low Range Phosphate Colorimeter HI713

Hanna Checker Low Range Phosphate Colorimeter HI713

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

Regular price $73.99

Regular price Sale price $73.99
Unit price per
Hanna Checker Marine Alkalinity (dKH) Checker® HC Calibration Check Set - HI772-11

Hanna Checker Marine Alkalinity (dKH) Checker® HC Calibration Check Set - HI772-11

Vendor:
Hanna
- Special Order
- Ships free on eligible orders*

Regular price $28.99

Regular price Sale price $28.99
Unit price per
Hanna Checker Marine Alkalinity Reagent 25 Tests HI755-26

Hanna Checker Marine Alkalinity Reagent 25 Tests HI755-26

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

Regular price $16.99

Regular price Sale price $16.99
Unit price per
Hanna Checker Marine Alkalinity Reagent 25 Tests HI772-26

Hanna Checker Marine Alkalinity Reagent 25 Tests HI772-26

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

Regular price $16.99

Regular price Sale price $16.99
Unit price per
Hanna Checker Marine Ammonia Colorimeter HI784

Hanna Checker Marine Ammonia Colorimeter HI784

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

Regular price $83.99

Regular price Sale price $83.99
Unit price per
Hanna Checker Marine Ammonia Reagents HI784-25

Hanna Checker Marine Ammonia Reagents HI784-25

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

Regular price $30.99

Regular price Sale price $30.99
Unit price per
Hanna Checker Marine Magnesium Colorimeter HI783

Sold out

Hanna Checker Marine Magnesium Colorimeter HI783

Vendor:
Hanna
- Backordered
- Ships free on eligible orders*

Regular price $83.99

Regular price Sale price $83.99
Unit price per

Sold out
Hanna Checker Marine Magnesium Reagents HI783-25

Hanna Checker Marine Magnesium Reagents HI783-25

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

Regular price $25.99

Regular price Sale price $25.99
Unit price per
Hanna Checker Marine pH Checker HI780

Hanna Checker Marine pH Checker HI780

Vendor:
Hanna
- Backordered
- Ships free on eligible orders*

Regular price $73.99

Regular price Sale price $73.99
Unit price per
Hanna Checker Marine Ultra Low Range Nitrite Colorimeter HI764

Hanna Checker Marine Ultra Low Range Nitrite Colorimeter HI764

Vendor:
Hanna
- Backordered
- Ships free on eligible orders*

Regular price $73.99

Regular price Sale price $73.99
Unit price per
Hanna Checker Marine Ultra Low Range Phosphate Colorimeter HI774

Hanna Checker Marine Ultra Low Range Phosphate Colorimeter HI774

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

Regular price $73.99

Regular price Sale price $73.99
Unit price per
Hanna Checker Nitrate High Range Colorimeter HI782

Hanna Checker Nitrate High Range Colorimeter HI782

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

Regular price $73.99

Regular price Sale price $73.99
Unit price per
Hanna Checker Nitrate High Range Reagent 25 Tests HI782-25

Hanna Checker Nitrate High Range Reagent 25 Tests HI782-25

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

Regular price $25.99

Regular price Sale price $25.99
Unit price per
Hanna Checker Nitrate LR Colorimeter HI781

Hanna Checker Nitrate LR Colorimeter HI781

Vendor:
Hanna
- Backordered
- Ships free on eligible orders*

Regular price $73.99

Regular price Sale price $73.99
Unit price per
Hanna Checker Nitrate Reagent 25 Tests HI781-25

Hanna Checker Nitrate Reagent 25 Tests HI781-25

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

Regular price $25.99

Regular price Sale price $25.99
Unit price per
Hanna Checker pH Tester with 0.1 pH Resolution HI98103

Hanna Checker pH Tester with 0.1 pH Resolution HI98103

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

Regular price $49.99

Regular price Sale price $49.99
Unit price per
Hanna Checker Phosphate Low Range Reagent 100 Tests HI93713-01

Hanna Checker Phosphate Low Range Reagent 100 Tests HI93713-01

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

Regular price $42.99

Regular price Sale price $42.99
Unit price per
Hanna Checker Phosphate Low Range Reagent 25 Tests HI713-25

Hanna Checker Phosphate Low Range Reagent 25 Tests HI713-25

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

Regular price $16.99

Regular price Sale price $16.99
Unit price per
Hanna Checker Phosphate Ultra Low Range Reagent 25 Tests HI774-25

Hanna Checker Phosphate Ultra Low Range Reagent 25 Tests HI774-25

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

Regular price $16.99

Regular price Sale price $16.99
Unit price per

1
2
3
4
5
6
…
10

Quick links

Terms & Conditions
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.