How to Remove Algae from Water Tank

Do you have a water tank at home? Have you noticed a green or slimy layer inside it? This is called algae, and it can be a big problem. Algae in your water tank can make the water bad and not safe to use. In this blog, we will talk about how to remove algae from your water tank, deal with algae problems, and keep your water clean and safe.

What is Algae?

Algae are tiny plants that grow in water and on surfaces that are often wet. They can be green, blue, or brown. Algae in water tanks is a common issue, especially in places with lots of sunlight and warm temperatures. This growth can make the water smell bad and change its color.

Signs of Algae in Your Water Tank

  1. Green Color: The most obvious sign is the water turning green.
  2. Bad Smell: If your water starts smelling odd, it could be because of algae.
  3. Slime on Surfaces: You might feel a slimy layer on the inner walls of the tank.

How to Remove Algae from Your Water Tank

Step 1: Empty the Tank

First, you need to empty your water tank. Make sure all the water is out, so you can clean the inside properly.

Step 2: Scrub the Tank

Use a long-handled brush to scrub the sides and bottom of the tank. This helps remove the algae stuck on the surfaces.

Step 3: Use Bleach

Mix a little bleach with water (use one part bleach to ten parts water). Wash the inside of the tank with this mixture to kill any remaining algae.

Step 4: Rinse Well

After using bleach, it’s very important to rinse the tank many times with clean water. This makes sure there’s no bleach left in the tank.

Step 5: Dry the Tank

Let the tank dry completely before you fill it with water again. This helps stop algae from growing back quickly.

Step 6: Cover the Tank

Make sure your tank has a good cover. This keeps out dirt and sunlight, which algae need to grow.

Preventing Algae Growth

  1. Keep the Tank Covered: Always make sure your tank is covered. This blocks sunlight, which algae need to grow.
  2. Clean Regularly: Clean your tank often to prevent algae from coming back.
  3. Check for Leaks: Fix any leaks in your tank. Leaks can let in nutrients that help algae grow.

Green Fungus in Water

Sometimes, what looks like algae is actually green fungus. This can also make the water unsafe. The steps to clean it are similar to cleaning algae. Keep the tank clean and dry, and use bleach carefully to kill the fungus.


Dealing with algae in your water tank can seem hard, but it’s very important for keeping your water clean. Using these simple steps, you can remove algae and make sure it doesn’t come back. Remember, keeping your tank clean and covered is the best way to stop algae growth.

Need Professional Help?

Cleaning a water tank can be a big job, and sometimes it’s best to call in the experts. Book a professional water tank cleaning service with Tankscrub to make sure your tank is perfectly clean and safe for use. Our team is here to help you with all your water tank needs!

By following these tips and steps, you can keep your water tank free from algae and ensure that your water is always clean and safe for use.

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