Aquarium Chemicals & Treatments

Algae will occur in most aquariums overtime, a little amount of algae is not harmful to your fish however, if it becomes excessive it can be harmful to aquatic plants and even your fish. There are many chemicals and treatments available but it can be hard to decide on which ones you need. Please get in touch with Petworld if you have any questions about aquarium water treatment products.

Showing 1–12 of 79 results

Ammonia Remover 1000ml

18.99
Ammonia Remover is an easy to use liquid that instantly removes toxic ammonia from the aquarium. It is safe to use in all freshwater and marine aquariums including those with invertebrates.

Api 5-in-1 Aquarium Test Strips 4pk

6.99
  • The quick and accurate way to test pH, Nitrite, Nitrate, Carbonate
  • General hardness levels in your aquarium
  • Please note: Products may differ slightly from the images shown, colours may vary unless specified.

API Ammonia Liquid Test Kit – 130 Tests

14.99
Fast, easy and accurate, this test kit measures ammonia levels from 0 to 7 ppm.

API Goldfish Success Pack

6.99
Goldfish water treatments pack - 2x30ml.

API Melafix Treatment 118ml

10.99
  • Melafix is an all-natural treatment, containing an extract of the tea tree, Melaleuca cajeputi
  • Helps heal open wounds and abrasions
  • Treats fin and tail rot, cloudy eye, mouth 'fungus', and promotes regrowth of damaged fin rays and tissue
  • Will not adversely affect the biological filter, alter the pH, or discolour water
  • Suitable for freshwater and marine

API Pimafix 118ml

9.99
Pimafix fungal and bacterial treatment - 118ml.