How to Use Green Water Labs Powdered Algae Control In Your Aquarium

How to Use Green Water Labs Powdered Algae Control In Your Aquarium

You Asked, We Delivered. 

When we started this company 4 years ago, we wanted to show the world that we can harness the incredible power of nature instead of relying on harsh synthetic chemicals when cleaning around our homes. Starting a chemical manufacturing business turned out to be a lot harder than we thought. Intense regulations, expensive equipment, and a lot of other factors make it difficult to start a competitive business. For the past 4 years we haven’t made a profit even with high prices for our products. Luckily we have an amazing community of customers like you, and some pretty cool investors, that are helping us make our dreams come true. 

The biggest feedback from our community has been that our prices are too high – and we hear you! We want to make our products accessible to everyone, even those of you with 500 gallon tanks and tight budgets. After several years of hard work in the lab, we're excited to introduce our new powdered algaecide, designed to provide the same effective algae control as our liquid products, but with added convenience and cost savings. This guide will walk you through the simple steps of using the new product in your aquarium, tank, or pond. You can always reach out to our team at with more questions, and check out our FAQ section as well. Thank you so much for your feedback and your loyalty over the past several years.

How to Use in Your Aquarium

  1. Prepare Your Materials:
  • Green Water Labs powdered Algae Control Concentrate
  • Green Water Labs reusable dropper bottle
  • Water
  1. Mix the Solution:
  • Measure the recommended amount of powdered algaecide for your tank size (refer to the product packaging for specific measurements).
  • Pour the powder into your reusable bottle (Fill the water bottle with water, leaving some space at the top.
  • Secure the lid and shake the bottle for 1 minute and wait 10 minutes to ensure the powder is completely dissolved.
  1. Add to Your Aquarium:
  • Shake the solution before adding the solution into your aquarium. 
  • If your aquarium water conditioner is needed, follow its instructions before adding the algaecide.
  • Ensure your aquarium filter and aeration are running to help distribute the solution.
  1. Monitor and Continue to Dose your Aquarium as Needed
  • Monitor your aquarium for algae growth and reapply weekly or as needed, following the recommended intervals on the product packaging.

Dosage Options

  • Light Growth/Preventative: 1.25ml (¼ tsp) for every 10 gallons, weekly.
  • Moderate Growth: 5ml (1 tsp) for every 10 gallons, weekly.
  • Tank Reset: Remove livestock, drain tank, apply directly to surface, let sit for at least 3 hrs. Clean filter, refill tank, increase aeration, add livestock.

Tips for Best Results

  1. Consistency: Treating your aquarium once a week will ensure minimal algae growth in your aquarium. We recommend adding the solution to your tank along with the replacement water during your weekly water changes. 
  2. Proper Storage: Store the product in a cool, dry place. Ensure the lids are tightly sealed to prevent moisture from affecting the powder.
  3. Reuse and Recycle: Utilize our pump sprayer or your favorite applicator and forget about piling up bottles of used cleaning products around your house. Hold on to your empty concentrate vials and we will give you a return label to ship them back. 

Safety Precautions

For Aquariums: Avoid overdosing your tank. If you have an extreme algae problem, you should do some manual removal before utilizing the product. Overuse of Algae Control can cause issues to your fish, shrimp, and plants due to a potential drop in pH. Always follow the recommended dosage and remember to consistently monitor your tank water parameters.

Let us know if you have any questions!

By following these simple steps, you can effectively control algae growth with our new powdered algaecide while enjoying the benefits of a more eco-friendly and cost-effective solution. If you have any questions or need further assistance, our customer support team is here to help at

Thank you for choosing Green Water Labs and supporting our mission to recycle over 1 million tons of organic waste every year. Thanks to community members like you, there is hope for a greener future. 

Back to blog