Skip to content

Home
Fish
Products
- Food
  
  Koi Food
  Tropical Fish Food
- Pond Products
  
  Air Pumps
  Water Pumps
  Water Care and Medication
  Pond Plumbing
  Filteration and UV
  Dry Goods
  Bio Tanks, Showers and Skimmers
- Aquarium Products
  
  Aquariums
  Filters, Pumps and Heaters
  Lights
  Water Care and Medication
- Miscellaneous
Plants
- Aquarium
- Pond
Pond Construction
About Us
Contact

Home
Fish
Products
- Food
  
  Koi Food
  Tropical Fish Food
- Pond Products
  
  Air Pumps
  Water Pumps
  Water Care and Medication
  Pond Plumbing
  Filteration and UV
  Dry Goods
  Bio Tanks, Showers and Skimmers
- Aquarium Products
  
  Aquariums
  Filters, Pumps and Heaters
  Lights
  Water Care and Medication
- Miscellaneous
Plants
- Aquarium
- Pond
Pond Construction
About Us
Contact

Search

Cart

Item added to your cart

Collection: Aquarium Water Care and Medication

Explore our range of aquarium water treatments and fish medicines, which includes Algae Control and cleaning solutions.

Filter and sort Filter

Filter and sort

Filter

55 products

Availability

In stock (51 products)
Out of stock (6 products)

Clear

Price

The highest price is £249.99

£

From

£

To

Clear

Product type

Additive (5 products)
Aquarium Test Kit (1 products)
Disinfectant (1 products)
Medication (3 products)
Test Kit (7 products)
treatment (1 products)
Treatment Kit (1 products)
Water Treatment (35 products)

Clear

Brand

API (9 products)
Colombo (15 products)
JBL (2 products)
Kusuri (11 products)
Microbe-lift (17 products)
Vetark (1 products)

Clear

Sort by:

Remove all

Sort by:

55 products

API PH UP™

API PH UP™

Regular price £10.99 GBP

Regular price Sale price £10.99 GBP
Unit price per
API Freshwater Master Test Kit

API Freshwater Master Test Kit

Regular price £29.95 GBP

Regular price Sale price £29.95 GBP
Unit price per
API White Spot Cure

Sold out

API White Spot Cure

Regular price £8.49 GBP

Regular price Sale price £8.49 GBP
Unit price per

Sold out
JBL Pro Aquatest Lab

JBL Pro Aquatest Lab

Regular price £85.00 GBP

Regular price Sale price £85.00 GBP
Unit price per
API Leaf Zone 237ml

API Leaf Zone 237ml

Regular price £13.50 GBP

Regular price Sale price £13.50 GBP
Unit price per
API Stress Coat

Sold out

API Stress Coat

Regular price From £8.99 GBP

Regular price Sale price From £8.99 GBP
Unit price per

Sold out
API Aqua Essential 16floz

Sold out

API Aqua Essential 16floz

Regular price £12.99 GBP

Regular price Sale price £12.99 GBP
Unit price per

Sold out

1
2
3
4

Quick links

Search
Aquariums and Aquarium Products
Koi and Pond
Terms of Service
Privacy Policy

Subscribe to our emails

Email

Payment methods

© 2025, C N Koi Powered by Shopify

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