Shipping Usually 2 - 5 business day. We ship to the 48 contiguous states in the USA.
If you're not satisfied with your purchase, you can return them. You may return most new, unopened items within 30 days of delivery for a full refund. Read more on Return page.
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API® Stress Zyme contains over 300 million live bacteria per teaspoonful to consume sludge and reduce aquarium maintenance, keeping your aquarium clean and improving the natural aquarium cycle. Making Stress Zyme part of your tank’s regular upkeep routine assures an active biological filter, a cleaner aquarium, healthier fish, and good water quality. This product may be used in both fresh and saltwater aquariums.