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Writer's pictureAlgaefree Australia Team

How to Control and Prevent Algae in Your Aquarium?




Aquariums are a window to the mesmerising world beneath the waves, showcasing a plethora of vibrant colours and a profound sense of tranquillity. However, these aquatic havens are not without their challenges.


One of the most notorious issues faced by aquarium enthusiasts is the relentless growth of algae. While algae are natural inhabitants of aquatic environments, controlling and preventing their overgrowth is crucial to maintaining the health and aesthetic beauty of your aquarium.


Understanding Algae

Before delving into preventative measures, it is imperative to comprehend what algae truly are. Algae are simple, plant-like organisms that thrive in water, performing photosynthesis to produce energy.


In moderation, they serve a crucial ecological role, though problems arise when they proliferate uncontrollably, clouding water and covering aquarium surfaces.


Several types of algae can be found in aquariums, such as green algae, brown algae, and the more stubborn blue-green algae, each displaying distinct characteristics and often requiring unique control strategies.


Optimising Light Conditions

A significant factor in algae growth is light. Algae, like all photosynthetic organisms, require light to grow. Thus, managing the lighting in your aquarium is an essential step.


Ensure that the light duration does not exceed 8-10 hours per day and opt for LED lights with the appropriate spectrum that supports plant growth without overly encouraging algae.


Positioning the aquarium away from direct sunlight can also minimise unnecessary light exposure that may spur algal blooms.


Nutrients and Algae Growth

Nutrients such as nitrates and phosphates play an instrumental role in the life cycle of algae. Overfeeding your fish and insufficient water changes can lead to a build-up of these nutrients, creating an ideal environment for algae to thrive.


It is advisable to maintain a disciplined feeding schedule, providing only what your fish can consume within a few minutes. Regularly test water parameters, ensuring nitrate levels remain below 20 ppm and phosphates are undetectable.


Routine water changes of approximately 10-15% weekly can substantially mitigate nutrient accumulation.


Natural Algae Predators

Incorporating algae-eating inhabitants into your aquarium can naturally assist in controlling algae levels. Fish such as Siamese algae eaters and certain pleco species can effectively graze on algal films.


Additionally, certain shrimp species and snails can also contribute to controlling algae, particularly for aquarists looking for an all-natural approach. It is, however, crucial to ensure that your tank environment is suitable for these creatures before introducing them.


Chemical Treatments

Chemical treatments can play an essential role in controlling algae, particularly when natural methods alone are insufficient.


At Algaefree Australia, we offer a range of carefully formulated aquarium water treatment products designed to target algae without disrupting the balance of your aquarium. Our treatments are crafted to be both effective and safe for the diverse inhabitants of your tank.


By following our detailed usage instructions, you can efficiently manage algae growth and maintain the pristine beauty of your aquatic environment.



A thriving aquarium is a delicate balance of various factors, and while algae might be a small component, their effect can be significant. At Algaefree Australia, we understand the intricacies of maintaining a pristine aquarium environment. Our expertise and products are designed to assist in achieving not just an algae-free aquarium, but a healthy and thriving one. Contact us today for tailored solutions to your aquarium challenges.


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