Improves the development of the biological filter and helps clean a dirty aquarium. Contains over 300 million live bacteria per teaspoonful. Breaks down organic compounds that cause dangerous conditions such as ammonia and nitrite poisoning and low oxygen levels. Continuous use assures an active biological filter, cleaner aquarium, healthier fish and good water quality. No refrigeration necessary. Use when setting up and maintaining an aquarium. For use in fresh and saltwater.
First, use Stress Coat to remove chlorine. Next on the 1st, 7th and 14th days, add 10 ml of Stress Zyme per 10 U.S.gallons (38 L) of water weekly.
Thereafter and for Existing Aquariums
To maintain good water quality and healthy biological filtration, add 5 ml of Stress Zyme per 10 U.S. gallons (38 L) of water weekly.
Internet Price: $4.99 - $13.99 Today's Price: $4.00 - $11.19 (Save up to 20%)
Shop All Products By API
Usually Leaves Warehouse the Next Business Day
4 fl. oz.
16 fl. oz.
Here's How it Works:
*Valid on Repeat Delivery eligible products, products subject to change.
$3.19 to $6.39
$4.79 to $39.99
$3.39 to $17.84
$11.04 to $37.14