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API is a leader in aquarium water care, offering solutions like Ammo-Lock II, Stress Coat, and Aquarium Salt. From betta fish conditioners to reef-safe test kits, API provides affordable, effective products for freshwater and saltwater tanks. Whether you need pH stabilizers, bacterial supplements, or plant fertilizers, API’s scientifically formulated treatments ensure a healthy aquatic ecosystem. Browse our API collection for water conditioners, test strips, and medications—trusted by aquarists for over 50 years!
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