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General Hydroponics KoolBloom KoolBloom® is a highly concentrated nutrient supplement that promotes abundant flowering and facilitates ripening in annual flowers and herbs. KoolBloom® is rich with phosphorus and potassium and contains precise amounts of ripening elements. KoolBloom® is to be used only at the very end of a plant's life cycle and will help build larger, heavier fruits and flowers.
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🇺🇸 Ship from USA · On Agora since 2026
$34.58