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Cheaper elsewhere? We’ll match it or credit you back even after purchase.
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Free standard shipping on orders over $99
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.
API Stress Zyme is a biological water conditioner designed to improve water quality and promote a balanced, healthy aquarium environment. Formulated with a blend of live beneficial bacteria, it helps break down organic waste—including uneaten food, fish waste, and plant debris—reducing harmful toxins such as ammonia, nitrite, and nitrate. Ideal for both new and established aquariums, Stress Zyme enhances the biological filtration system and supports long-term aquarium stability.
Live Beneficial Bacteria: Contains millions of active bacteria that break down harmful organic matter into less toxic compounds.
Improves Water Quality: Reduces ammonia, nitrite, and nitrate levels, promoting a cleaner, safer habitat for aquatic life.
Supports Biological Filtration: Enhances the natural biological cycle by seeding and reinforcing beneficial bacterial colonies.
Safe for All Aquatic Life: Non-toxic and completely safe for fish, invertebrates, and aquatic plants.
Versatile Use: Suitable for use in new aquarium setups, during routine maintenance, or after events that may disrupt biological balance.
Dosage: Add 5 mL per 10 gallons (38 L) of aquarium water.
Frequency: Dose weekly, after water changes, or when water parameters indicate elevated waste levels.
Application: Add directly to the aquarium, preferably near the filter output for even distribution.
Monitoring: Regularly test water parameters to track the effectiveness of biological filtration.
592 mL Bottle: Ideal for medium to large tanks; provides multiple treatments to maintain water clarity and biological balance.
API Stress Zyme is highly recommended for maintaining optimal water conditions in both freshwater and saltwater aquariums. It is particularly effective during tank cycling, after overfeeding, or when organic waste levels rise. Used consistently, it supports a healthy, stable ecosystem and reduces reliance on chemical treatments by reinforcing natural filtration processes.
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