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How to Prevent Water Tank Algae Growth: Essential Tips from NSW Water Tanks


Hello, I’m Joel Flood from NSW Water Tanks. One common question I get from our clients is how to prevent algae growth in their water tanks. Algae growth can compromise the quality of your stored water and negatively impact the longevity of your water tank. So, today, I’m going to share some practical tips to prevent this issue and maintain the quality of your water tank.

Understanding Algae Growth in Water Tanks

First, let’s understand what we’re dealing with. Algae are microscopic plant-like organisms that flourish in moist and light-rich environments. In a water tank, algae can multiply rapidly, causing discolouration and unpleasant odours. This can lead to issues with water taste and quality, and in severe cases, can cause damage to the tank itself.

Causes of Algae Growth in Water Tanks

Several factors contribute to algae growth in water tanks. The main ones are sunlight, warmth, and nutrients. Algae require light for photosynthesis, warmth for growth, and nutrients that are often present in the water, such as nitrogen and phosphorous.

Signs of Algae Growth in Your Water Tank

Common signs of algae in water tanks include green, brown, or yellow water, a musty or fishy smell, and an unpleasant taste in the water. If you notice any of these signs, it’s likely that you have an algae problem.

Practical Tips for Preventing Algae Growth

So, how do you prevent algae growth in your water tank? Here are some practical tips:

  1. Use light-blocking materials: The less sunlight that reaches your water, the better. Use light-blocking materials for your water tank and its surroundings.
  2. Regular Cleaning: Algae can build up over time, so regular cleaning of your tank is crucial. This should be done at least once a year or more frequently if you notice signs of algae.
  3. Proper filtration: Make sure your water is properly filtered before it enters the tank. This helps remove nutrients that can feed the algae.
  4. Use of algaecides: If algae is already present, algaecides can be an effective solution. However, they should be used cautiously, following the manufacturer’s instructions to the letter.

The Role of High-Quality Water Tanks in Algae Prevention

Choosing a high-quality water tank is another crucial step in preventing algae growth. This is where Pioneer Water Tanks come into play. Pioneer Water Tanks are designed with an innovative AQUALINER Fresh® tank liner, the result of a collaboration with Swiss antimicrobial tech powerhouse SANITIZED®.

This revolutionary technology, which is incorporated into the construction of the liner fabric, provides superior protection against algae, fungi, bacteria, and mould. As a result, your tank water stays fresher for longer. The AQUALINER Fresh® tank liner inhibits the growth and reproduction of algae, helping to maintain the quality and safety of your stored water. And the best part? This cutting-edge technology is made right here in Australia!


Preventing algae growth in your water tank might seem like a daunting task, but with these practical tips and the right water tank, it becomes a lot easier. Remember, the key to maintaining a clean and efficient water tank is regular maintenance, proper filtration, and quality tank materials.

If you have more questions about preventing algae growth or are interested in our Pioneer Water Tanks, don’t hesitate to get in touch with us at NSW Water Tanks. We’re here to ensure you have the best water storage solutions