![Independent Store Brand Pond & Aquarium Pond Block 1000-3500 Ltrs](http://madaquariums.com.au/cdn/shop/products/Independant-Store-Brand-Clear-Block-Large-Green-snippet-600x600_7e08f8d5-38b7-4c28-b3c1-cd635880038d_{width}x.jpg?v=1654927794)
Independent Store Brand Pond and Aquarium Clear Blocks will clear Green Water and Bacterial Algae in Approximately 7 Days and depending on water hardness will last 3 to 4 weeks.
The Majority of aquarium algae are actually bacteria, as a result this product is not herbicidal but anti-bacterial.
This block also assists in the prevention of Ammonia Spikes and will stabilize Aquarium PH by resisting with acidifying PH Reduction
Treats: 1000-3500 ltrs