Skip to site navigation Skip to main content
main content
  1. Home
  2. Marketplace
  3. Pets & animals
  4. Fish
  5. Water treatment

Water treatment

Search Results

Showing 1,156 results

Card display mode (optional)
Advertisement
Advertisement
Advertisement
Advertisement
International
Closes: Wed, 7 May
ZRDR High Quality Needle Valve Regulator For 4 6mm Co2 Tube In Aquarium Co2
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$21.85
$17.95
Loading Image 1 of 10
Image 1 of 10
Loading Image 2 of 10
Loading Image 10 of 10
Save 18%
Waikato
Closes: Wed, 7 May
Fluval Test pH Wide range 4.5-9.0 Fresh and Salt Water

$10.00 shipping nationwide

Expected delivery in 5-8 business days

Buy Now
$23.00
Loading Image 1 of 1
Image 1 of 1
Waikato
Closes: Wed, 7 May
NF Bio Clear Water Clarifier 120ml

$10.00 shipping nationwide

Expected delivery in 5-8 business days

Buy Now
$19.00
Loading Image 1 of 1
Image 1 of 1
International
Closes: Wed, 7 May
Aquarium CO2 Generator System With Stainless Steel Cylinder Reactor Kit
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$344.46
$282.95
Loading Image 1 of 10
Image 1 of 10
Loading Image 2 of 10
Loading Image 10 of 10
Save 18%
Waikato
Closes: Wed, 7 May
Aqua One Ammonia and Chlorine Neutraliser 500ml

$7.00 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$25.00
Loading Image 1 of 1
Image 1 of 1
Auckland
Closes: Wed, 7 May
Aquarium Water Quality Test Strips (7 Parameters)

$6.95 shipping nationwide

Expected delivery in 1-2 business days

Buy Now
$27.99
Loading Image 1 of 5
Image 1 of 5
Loading Image 2 of 5
Loading Image 5 of 5
Auckland
Closes: Wed, 7 May
Aquarium Ammonia Water Test Strips

$6.95 shipping nationwide

Expected delivery in 1-2 business days

Buy Now
$24.99
Loading Image 1 of 7
Image 1 of 7
Loading Image 2 of 7
Loading Image 7 of 7
Auckland
Closes: Wed, 7 May
40pcs Bio balls / Aquarium Fish Tank Filter Media

$8.00 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$7.00
Loading Image 1 of 1
Image 1 of 1
Waikato
Closes: Wed, 7 May
Aqua one nitrite test kit

$10.00 shipping nationwide

Expected delivery in 5-8 business days

Buy Now
$18.40
Waikato
Closes: Wed, 7 May
Aqua one freshwater ph test kit

$10.00 shipping nationwide

Expected delivery in 5-8 business days

Buy Now
$15.76
Waikato
Closes: Wed, 7 May
Aqua one heater clips suction cups for glass heaters 25-300 watts

$10.00 shipping nationwide

Expected delivery in 5-8 business days

Buy Now
$5.00
Auckland
Closes: Wed, 7 May
Disk Diffuser, Fine Bubble, 250mm, Aerator

Shipping from $12.83

Buy Now
$80.96
Auckland
Closes: Fri, 2 May
API Stress Coat Water Conditioner 237ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$22.99
Auckland
Closes: Wed, 7 May
10Pcs/Lot Aquarium Airline Tubing Connectors Fish Tank Transparent

Free shipping nationwide

Expected delivery in 8-15 business days

Options available
Buy Now
$18.99–$20.99
Auckland
Closes: Wed, 7 May
Flourish Iron 250mL - Seachem
SALE! WAS $27.95 NOW $25.16 ENDS 8/5/25

Shipping from $6.00

Buy Now
$27.95
$25.16
Save 10%
Auckland
Closes: Wed, 7 May
PH Test Strips

$6.81 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$4.02
Auckland
Closes: Wed, 7 May
Flourish Tabs 10pk - Seachem
SALE! WAS $34.95 NOW $31.46 ENDS 8/5/25

Shipping from $6.00

Buy Now
$34.95
$31.46
Save 10%
International
Closes: Wed, 7 May
Stainless Steel Aquarium Fish CO2 Diffuser Replacement Slice UU78
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$19.42
$15.95
Save 18%
Waikato
Closes: Wed, 7 May
AquaOne Carbon Cartridge - IFXE 200 (2pk)

$10.00 shipping nationwide

Expected delivery in 5-8 business days

Buy Now
$9.00
Waikato
Closes: Wed, 7 May
AquaOne Sponge - IFXE 200 (2pk)

$10.00 shipping nationwide

Expected delivery in 5-8 business days

Buy Now
$8.00
International
Closes: Wed, 7 May
Diffuse Glass CO2 Drop Checker For Aquarium Fish Tank
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$16.99
$13.95
Save 18%
Auckland
Closes: Fri, 2 May
API Aquarium Stress Zyme 30ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$8.50
Auckland
Closes: Fri, 2 May
Aqua One Algae Block 20g

Free shipping nationwide

Expected delivery in 3-4 business days

Buy Now
$16.99
Auckland
Closes: Fri, 2 May
Aqua One Algae Block 20g

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$12.99
International
Closes: Wed, 7 May
ZRDR Aquarium CO2 Bubble Counter Accessories Single Dual Head
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$20.63
$16.95
Save 18%
Waikato
Closes: Wed, 7 May
TLC Aquarium Optimizer Freshwater 355ml

$7.00 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$25.00
Auckland
Closes: Wed, 7 May
16 In 1 Drinking Water Test Kit Strips Home Water Quality Test Swimming P CHK29M
FREE SHIPPING TO NZ

Free shipping nationwide

Expected delivery in 14-21 business days

Options available
Buy Now
$34.99–$44.99
Auckland
Closes: Wed, 7 May
API pH Up 37mL
SALE! WAS $13.95 NOW $12.56 ENDS 8/5/25

Shipping from $6.00

Buy Now
$13.95
$12.56
Save 10%
Canterbury
Closes: Fri, 2 May
PH Meter Test Pen Digital Electric Portable Water Hydroponics Aquarium Tester

Shipping from $1.69

No reserve
$9.85
Buy Now
$9.85
Auckland
Closes: Fri, 2 May
API Pond Algaefix FOR PONDS CONTAINING PLANTS & FISH 473ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$55.99
Nelson Bays
Closes: Wed, 7 May
API Accu-Clear

Shipping from $3.00

Options available
Buy Now
$7.90–$19.90
International
Closes: Wed, 7 May
U Shape CO2 Refiner Transparent Acrylic Fish Tank Mini Diffuser Aquarium Plant
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$32.80
$26.94
Save 18%
International
Closes: Wed, 7 May
DIY Aquarium CO2 Valve Diffuser Kit With Pressure Air Flow Device
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$46.20
$37.95
Save 18%
Auckland
Closes: Wed, 7 May
Reef Strontium 250mL - Seachem
SALE! WAS $30.95 NOW $27.86 ENDS 8/5/25

Shipping from $6.00

Buy Now
$30.95
$27.86
Save 10%
International
Closes: Wed, 7 May
Fish Tank CO2 Diffuse Glass Drop Checker For Co2 Monitor PH Indicator
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$18.20
$14.95
Save 18%
Auckland
Closes: Wed, 7 May
Aquatic API Pond Ecofix Sludge Destroyer (1.89L)
SALE! WAS $202.00 NOW $181.80 ENDS 8/5/25

Free shipping nationwide

Expected delivery in 3-5 business days

Buy Now
$202.00
$181.80
Save 10%
Auckland
Closes: Fri, 2 May
Seachem Purigen High Capacity Filter Resin 100ml

Free shipping nationwide

Expected delivery in 3-4 business days

Buy Now
$44.99
Auckland
Closes: Wed, 7 May
Aquatic Stability (4L)
SALE! WAS $322.00 NOW $289.80 ENDS 8/5/25

Free shipping nationwide

Expected delivery in 3-5 business days

Buy Now
$322.00
$289.80
Save 10%
Auckland
Closes: Fri, 2 May
Seachem Garlic Guard 100ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$14.50
Auckland
Closes: Fri, 2 May
Seachem Reef Phytoplankton 250ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$33.80
Auckland
Closes: Wed, 7 May
NEW 17.8/25CM Plastic Air Bubble Stone Aquarium Fish Tank Oxygen Diffuser

$6.58 shipping nationwide

Expected delivery in 2-3 business days

Options available
Buy Now
$4.80–$5.80
Auckland
Closes: Wed, 7 May
API CO2 Booster 473mL
SALE! WAS $54.95 NOW $49.46 ENDS 8/5/25

Shipping from $6.00

Buy Now
$54.95
$49.46
Save 10%
International
Closes: Wed, 7 May
Glass Spiral CO2 Diffuser Bubble Counter For Aquarium Planted Tank
NZ Customer Support, 50000+ Positive Feedbacks

$3.99 shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$19.42
$15.95
Save 18%
Auckland
Closes: Wed, 7 May
Aquarium API Nitra-Zorb - 1 x Large Pouch
SALE! WAS $57.95 NOW $52.16 ENDS 8/5/25

Shipping from $6.00

Buy Now
$57.95
$52.16
Save 10%
Auckland
Closes: Wed, 7 May
Freshwater Master Test Kit API
SALE! WAS $119.00 NOW $107.10 ENDS 8/5/25

Free shipping nationwide

Expected delivery in 3-5 business days

Buy Now
$119.00
$107.10
Save 10%
Auckland
Closes: Fri, 2 May
Seachem Alert - Combo Pack

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$38.99
Auckland
Closes: Fri, 2 May
Seachem Purigen High Capacity Filter Resin 100ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$38.99
Auckland
Closes: Wed, 7 May
Fish Elevator-Negative Pressure Fish Tank Water Fish Tank Water Level

Free shipping nationwide

Expected delivery in 8-15 business days

Buy Now
$67.99
Auckland
Closes: Wed, 7 May
Flourish 250mL - Seachem
SALE! WAS $27.95 NOW $25.16 ENDS 8/5/25

Shipping from $6.00

Buy Now
$27.95
$25.16
Save 10%
Auckland
Closes: Wed, 7 May
Aquatic Water Testing Seachem Multitest - Phosphate
SALE! WAS $60.95 NOW $54.86 ENDS 8/5/25

Shipping from $6.00

Buy Now
$60.95
$54.86
Save 10%
Auckland
Closes: Wed, 7 May
API Quick Start 30mL
SALE! WAS $9.95 NOW $8.96 ENDS 8/5/25

Shipping from $6.00

Buy Now
$9.95
$8.96
Save 10%
Auckland
Closes: Wed, 7 May
Flourish 500mL - Seachem
SALE! WAS $42.95 NOW $38.66 ENDS 8/5/25

Shipping from $6.00

Buy Now
$42.95
$38.66
Save 10%
Auckland
Closes: Fri, 2 May
Wunder Fish Medication White Spot Cure 50ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$14.99
Auckland
Closes: Fri, 2 May
Wunder Fish Medication White Spot Cure 50ml

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$14.99
Auckland
Closes: Wed, 7 May
Matrix Carbon 250mL - Seachem
SALE! WAS $39.95 NOW $35.96 ENDS 8/5/25

Shipping from $6.00

Buy Now
$39.95
$35.96
Save 10%
Auckland
Closes: Fri, 2 May
Wunder Tonic Medication for Fish 50ML

$6.95 shipping nationwide

Expected delivery in 2-3 business days

Buy Now
$15.99
We are upgrading some of our systems
Learn more