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GreenClean is a granular algaecide with an activated peroxygen chemistry that works through a powerful oxidation reaction to break down algae cells on contact. An added benefit, the process releases oxygen into the water as it works to eliminate algae. Ideal for string algae and waterfalls. Made in the U.S.A.
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🇺🇸 Ship from USA · On Agora since 2025
$19.99