Skip to content

Orders
Profile
Settings

Home
Dog
- Flea, Worm & Supplements
- Food
- Frozen Raw Food
- Treats
- Toys
- Collars, Leads & Harnesses
- Beds, Crates & Carriers
- Training & Behaviour
- Clothing
- Accessories
Cat
- Flea, Worm & Supplements
- Food
- Frozen Raw Food
- Treats
- Toys
- Collars, Leads & Harnesses
- Beds, Crates & Carriers
- Litter, Tray & Accessories
- Accessories
Bird
- Food, Treats & Supplements
- Seeds
  - Seed Bells
- Accessories
- Cages & Accessories
- Wild Bird, Food, Feeders & Accessories
Fish
- Accessories
- Food
- Aquariums & Spare Parts
- Air Pumps & Accessories
- Canister Filters & Spare Parts
- Internal Filters & Spare Parts
- Health
- Decorations
- Live Plants
- Live Fish
Small Animals
- Accessories
- Food & Treats
Reptile
- Accessories
- Food & Treats
- Heating & Lighting
New Products
Contact

Home
Dog
Cat
Bird
Fish
Small Animals
- Accessories
- Food & Treats
Reptile
New Products
Contact

Search for anything

Home
Dog
Cat
Bird
Fish
Small Animals
Reptile
New Products
Contact

Home / Shop / Aquarium Water Conditioners

Aquarium Water Conditioners

Filter and sort 83 products

Price

The highest price is $297.99

$

—

$

Brand

API (38)
Aqua One (12)
Blue Planet (1)
Brooklands (1)
JBL (3)
Pet City (1)
Seachem (24)
Wunder (3)

Type

Aquarium Spare Parts (1)
Aquatic Accessories (2)
Aquatic Medications (7)
Fish Health (16)
Fish Tank Health & Water Treatments (1)
Plant Health (1)
Test Kit (19)
Water Conditioner (36)

Sort by

Sort by

Clear

Price

The highest price is $297.99

$

—

$

Brand

API (38)
Aqua One (12)
Blue Planet (1)
Brooklands (1)
JBL (3)
Pet City (1)
Seachem (24)
Wunder (3)

Type

Aquarium Spare Parts (1)
Aquatic Accessories (2)
Aquatic Medications (7)
Fish Health (16)
Fish Tank Health & Water Treatments (1)
Plant Health (1)
Test Kit (19)
Water Conditioner (36)

83 products

Filter and sort

Sold out
Compare

Seachem
Seachem Tanganyika Buffer* ~~$32.99 NZD~~ $14.99 NZD /
Save 10%
Compare

API
API Ammo Lock ~~$19.99 NZD~~ From $17.99 NZD /
Choose options
Save 23%
Compare

API
API Goldfish Care Pack ~~$12.99 NZD~~ $9.99 NZD /
Sold out
Compare

API
API pH Freshwater Test ~~$24.42 NZD~~ $18.90 NZD /
Save 31%
Compare

API
API High Range pH Test Kit ~~$25.99 NZD~~ $17.99 NZD /
Sold out
Compare

API
API pH Test and Adjuster Kit ~~$39.99 NZD~~ $33.99 NZD /
Sold out
Compare

API
API Phosphate Test* ~~$39.99 NZD~~ $29.99 NZD /
Compare

API
API Betta Water Conditioner $12.99 NZD /
Save 18%
Compare

API
API Pond Stress Coat ~~$48.99 NZD~~ $39.99 NZD /
Sold out
Compare

API
API Pond Microbial Algae Clean ~~$59.99 NZD~~ From $54.30 NZD /
Save 20%
Compare

API
API Pond Simply Clear ~~$59.99 NZD~~ $47.99 NZD /
Save 6%
Compare

API
API Pond & Waterfall Cleaner ~~$68.99 NZD~~ $64.99 NZD /
Sold out
Compare

API
API Aquarium Start Up Pack ~~$15.00 NZD~~ $12.00 NZD /
Compare

Aqua One
Aqua One Ammonia Remover & Chlorine Neutraliser From $14.99 NZD /
Choose options
Compare

Brooklands
Brooklands Tonic Salt From $5.99 NZD /
Choose options
Save 7%
Compare

API
API Algaefix ~~$13.99 NZD~~ From $12.99 NZD /
Choose options
Save 8%
Compare

Aqua One
Aqua One Freshwater Quick Drop pH Test Kit ~~$18.99 NZD~~ $17.50 NZD /
Save 8%
Compare

Aqua One
Aqua One Quick Drop Ammonia NH3 Test Kit ~~$18.99 NZD~~ $17.50 NZD /
Sold out
Compare

Aqua One
Aqua One Quick Drop Nitrate NO3 Test Kit ~~$18.99 NZD~~ $17.50 NZD /
Sold out
Compare

Aqua One
Aqua One Quick Drop Nitrite NO2 Test Kit ~~$18.99 NZD~~ $17.50 NZD /
Save 8%
Compare

Aqua One
Aqua One Quick Drop Phosphate PO4 Test Kit ~~$18.99 NZD~~ $17.50 NZD /
Save 67%
Compare

API
API Quick Start ~~$29.99 NZD~~ From $9.99 NZD /
Choose options
Save 15%
Compare

API
API Accu-Clear ~~$12.99 NZD~~ From $10.99 NZD /
Choose options
Save 38%
Compare

API
API PH Down ~~$18.99 NZD~~ From $11.70 NZD /
Choose options
Save 15%
Compare

API
API pH Up ~~$12.99 NZD~~ From $10.99 NZD /
Choose options
Save 17%
Compare

API
API Nitrite Test Fresh/Salt ~~$29.99 NZD~~ $24.99 NZD /
Compare

API
API Goldfish Aquarium Cleaner $24.99 NZD /
Save 33%
Compare

API
API Single Replacement Test Kit Tube & Cap ~~$5.99 NZD~~ $3.99 NZD /
Sold out
Compare

Wunder
Wunder White Spot Cure ~~$16.99 NZD~~ $12.99 NZD /
Compare

Aqua One
Aqua One Water Conditioner Health Plus From $10.99 NZD /
Choose options
Compare

Wunder
Wunder Tonic $14.99 NZD /
Save 15%
Compare

Seachem
Seachem Iron Test Kit ~~$52.98 NZD~~ $44.99 NZD /
Compare

Seachem
Seachem Copper Test Kit $44.99 NZD /
Save 7%
Compare

Seachem
Seachem Catappa Leaves ~~$26.99 NZD~~ $24.99 NZD /
Sold out
Compare

Aqua One
Aqua One Aquarium Rock Salt ~~$15.98 NZD~~ From $13.99 NZD /

FAQ
Search
Contact Us
Our Brands
About Afterpay

Privacy Policy
Terms & Conditions
Refund Policy
Shipping Policy
Fish Dead On Arrival Policy

Subscribe to our newsletter

Subscription description

Email

I agree to receiving marketing emails and special deals

© 2026 Pet City, All rights reserved. Powered by Shopify

Cart ⁰

Your cart is currently empty.

Search

Trending Now

Save 25%
Compare

Inaba
Inaba Churu Rolls Chicken wraps with Cheese Recipe Dog Treats ~~$15.99 NZD~~ $11.99 NZD /
Save 25%
Compare

VetIQ
VetIQ Nibblots Spinach Nibblots ~~$9.99 NZD~~ $7.49 NZD /
Save 15%
Compare

Pet City
Slow Feeder Bowl Carrot ~~$12.99 NZD~~ $10.99 NZD /