Aquarium Water Treatments

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The Right Treatment for Every Aquarium Water Problem Maintaining great water quality is one of the most important things you can do for your fish. Aquarium water treatments cover a broad range of products designed to make tap water safe, correct water chemistry, remove harmful compounds and support a healthy biological environment. Whether you're setting up a new tank, doing a routine water change or troubleshooting a problem, there's a treatment for every situation. Types of Aquarium Water Treatments Dechlorinators & water conditioners — neutralise chlorine, chloramines and heavy metals in tap water instantly, making it safe for fish Biological supplements — introduce beneficial bacteria to establish or boost your filter's nitrogen cycle, reducing ammonia and nitrite spikes pH adjusters — raise or lower pH to match the requirements of your fish species, from soft acidic water for tetras to hard alkaline water for African cichlids Ammonia & nitrite detoxifiers — provide protection during tank cycling or when water quality deteriorates suddenly Mineral supplements — restore essential minerals stripped by RO or softened water, supporting fish health and plant growth Which Aquarium Water Treatment Do You Need? Start with a quality water conditioner for every water change — this is non-negotiable for any tank using tap water. From there, your specific needs depend on your fish species, tank type and water source. Test your water regularly to identify what needs correcting, then choose a targeted treatment to address it. Browse our full range of aquarium water treatments suited to freshwater, planted and marine setups, trusted by Australian fish keepers.