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Terms and Conditions Apply!
We can ship to any address in Australia and New Zealand. Note that there are restrictions on some products, and some products cannot be shipped to some locations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full kilo.
Serenity Green Water Destroyer Block offers an effective and convenient solution for clearing green water caused by suspended algae blooms in freshwater aquariums. This slow-dissolving 20g block is designed to improve water clarity by targeting the root causes of green water, making it ideal for tanks experiencing algae-related discoloration. Safe for fish and plants when used correctly, it helps restore a clean and healthy aquatic environment with minimal effort.
Fast-Acting Green Water Control: Targets and breaks down suspended algae responsible for green water, visibly improving clarity.
Slow-Release Formula: Dissolves gradually for long-lasting results and continued protection against algae resurgence.
Aquarium Safe: Non-toxic and safe for fish, live plants, and other freshwater aquarium inhabitants when used as directed.
Hassle-Free Application: Simply place the block in the tank—no need for complex dosing or additional equipment.
Enhances Water Clarity: Helps restore a clean and clear aquarium, improving visual appeal and overall water quality.
Standard Treatment:
Use 1 block (20g) per 200 liters (52.8 gallons) of aquarium water. Place it directly into the tank or filter compartment and allow it to dissolve naturally.
For Severe Algae Blooms:
In heavily affected tanks, use additional blocks as needed based on tank volume. Monitor progress closely and avoid overuse.
Post-Treatment Care:
Once the water clears, perform a partial water change and clean the filter to remove dead algae and maintain stable conditions.
20g Block – Suitable for most home aquariums, offering a simple solution to manage and prevent green water issues.
Use Preventively: For aquariums prone to recurring algae blooms, incorporate the block into a routine maintenance plan.
Maintain Proper Filtration: Ensure your filter is functioning efficiently and your aquarium is not overstocked or overfed.
Support with Regular Maintenance: Combine use with scheduled water changes and monitoring of nutrient levels to maintain long-term water quality.
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