Fish Water Treatments
Keep your aquarium healthy and your fish thriving with our wide range of fish water treatments. From essential water conditioners to powerful aquatic medications, our collection helps maintain clean, balanced, and safe water. Explore treatments for algae removal, bacterial and fungal infections, parasites, and stress reduction, alongside plant food and CO₂ boosters to support live plants. With trusted brands like API, Interpet, Fluval, Aqua One, and Tetra, you’ll find reliable solutions for every need. Whether you’re starting a new tank, treating sick fish, or improving water clarity, our treatments make caring for your aquarium simple and effective.
Filter
£14.49
- Unit price
- / per
£14.49
- Unit price
- / per
In stock
Regular price
£18.19
£12.99
29% off
- Unit price
- / per
Regular price
£18.19
£12.99
29% off
- Unit price
- / per
In stock
£12.99
- Unit price
- / per
£12.99
- Unit price
- / per
In stock
£6.99
- Unit price
- / per
£6.99
- Unit price
- / per
In stock
£9.99
- Unit price
- / per
£9.99
- Unit price
- / per
In stock
£5.90
- Unit price
- / per
£5.90
- Unit price
- / per
In stock
£8.49
- Unit price
- / per
£8.49
- Unit price
- / per
In stock
£5.79
- Unit price
- / per
£5.79
- Unit price
- / per
Out of stock
£7.79 - £19.99
- Unit price
- / per
£7.79 - £19.99
- Unit price
- / per
In stock
£7.49
- Unit price
- / per
£7.49
- Unit price
- / per
In stock
£7.49
- Unit price
- / per
£7.49
- Unit price
- / per
In stock
£7.49 - £14.49
- Unit price
- / per
£7.49 - £14.49
- Unit price
- / per
In stock
£7.49 - £14.49
- Unit price
- / per
£7.49 - £14.49
- Unit price
- / per
In stock
£7.49 - £14.49
- Unit price
- / per
£7.49 - £14.49
- Unit price
- / per
In stock
£6.99 - £28.99
- Unit price
- / per
£6.99 - £28.99
- Unit price
- / per
In stock
£7.49 - £14.49
- Unit price
- / per
£7.49 - £14.49
- Unit price
- / per
In stock
£6.29
- Unit price
- / per
£6.29
- Unit price
- / per
In stock
£7.99
- Unit price
- / per
£7.99
- Unit price
- / per
In stock
£7.99
- Unit price
- / per
£7.99
- Unit price
- / per
In stock
£6.99
- Unit price
- / per
£6.99
- Unit price
- / per
In stock
£3.49
- Unit price
- / per
£3.49
- Unit price
- / per
In stock
£3.49
- Unit price
- / per
£3.49
- Unit price
- / per
In stock
£7.99
- Unit price
- / per
£7.99
- Unit price
- / per
Out of stock
£10.99
- Unit price
- / per
£10.99
- Unit price
- / per
In stock
£15.75
- Unit price
- / per
£15.75
- Unit price
- / per
In stock
£4.99
- Unit price
- / per
£4.99
- Unit price
- / per
In stock
£4.50 - £6.99
- Unit price
- / per
£4.50 - £6.99
- Unit price
- / per
In stock
£4.45 - £18.99
- Unit price
- / per
£4.45 - £18.99
- Unit price
- / per
In stock
£2.50 - £17.50
- Unit price
- / per
£2.50 - £17.50
- Unit price
- / per
In stock
£3.60 - £22.50
- Unit price
- / per
£3.60 - £22.50
- Unit price
- / per
In stock
£9.99 - £13.50
- Unit price
- / per
£9.99 - £13.50
- Unit price
- / per
In stock
£8.99 - £16.99
- Unit price
- / per
£8.99 - £16.99
- Unit price
- / per
In stock
Regular price
£5.79
from £4.99
51% off
- Unit price
- / per
Regular price
£5.79
from £4.99
51% off
- Unit price
- / per
In stock
Regular price
£5.79
from £2.29
60% off
- Unit price
- / per
Regular price
£5.79
from £2.29
60% off
- Unit price
- / per
In stock
Regular price
£7.39
from £5.99
29% off
- Unit price
- / per
Regular price
£7.39
from £5.99
29% off
- Unit price
- / per
In stock
£159.99
- Unit price
- / per
£159.99
- Unit price
- / per
In stock
£199.99
- Unit price
- / per
£199.99
- Unit price
- / per
In stock
£3.50 - £6.00
- Unit price
- / per
£3.50 - £6.00
- Unit price
- / per
In stock
£2.00 - £7.80
- Unit price
- / per
£2.00 - £7.80
- Unit price
- / per
In stock
£4.50 - £6.00
- Unit price
- / per
£4.50 - £6.00
- Unit price
- / per
In stock
£3.50 - £5.75
- Unit price
- / per
£3.50 - £5.75
- Unit price
- / per
In stock
£64.99
- Unit price
- / per
£64.99
- Unit price
- / per
In stock
£3.50 - £6.99
- Unit price
- / per
£3.50 - £6.99
- Unit price
- / per
In stock
£5.10
- Unit price
- / per
£5.10
- Unit price
- / per
Out of stock
£2.80 - £14.99
- Unit price
- / per
£2.80 - £14.99
- Unit price
- / per
Out of stock
£5.10 - £19.99
- Unit price
- / per
£5.10 - £19.99
- Unit price
- / per
Out of stock
£6.45
- Unit price
- / per
£6.45
- Unit price
- / per
Out of stock
£4.85 - £8.99
- Unit price
- / per
£4.85 - £8.99
- Unit price
- / per
Out of stock
- 1
- 2
You're viewing 1-48 of 96 products
Water Conditioners
Conditioners remove chlorine, detoxify harmful substances, and make tap water safe for fish, ensuring a healthy start for every aquarium.
Aquarium Medications
Treat common fish illnesses such as fin rot, white spot, and parasites with targeted solutions from leading aquatic care brands.
Plant Nutrition
Support vibrant plant growth with liquid fertilisers, CO₂ supplements, and root boosters designed to keep aquatic plants strong and healthy.
Algae & Clarity Control
Combat algae growth and maintain crystal-clear water with specialist treatments that improve visibility and water quality.
FAQs
Do I need water conditioner for every water change? Yes, using a conditioner ensures harmful chlorine and heavy metals are neutralised.
Can water treatments harm my fish? When used as directed, treatments are safe and effective for fish, plants, and beneficial bacteria.
Which treatment should I use first in a new tank? A bio-starter or filter booster helps establish beneficial bacteria, making the tank safe for fish.
