API Stress Zyme

  • From $6.30
  • RRP $8.76
Item in Stock | Usually dispatched within 24 hours
Order within for delivery Friday 25th June with Express Delivery

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  • Helps keep aquariums clean
  • Contains live bacteria to consume sludge
  • Reduces aquarium maintenance
  • Improves biological filter for a healthy aquarium
  • Contains over 300 million beneficial live bacteria per 5ml
  • All natural ingredients
  • No refrigeration necessary
  • For use in fresh and saltwater aquariums

API Stress Zyme contains live bacteria to consume sludge and reduce aquarium maintenance.

Stress Zyme adds beneficial bacteria to break down and consume organic matter to help keep the aquarium clean.  The bacteria in Stress Zyme is uniquely suited to consume aquarium sludge, and keep the gravel clean.  

Stress Zyme contains over 300 million live bacteria per teaspoonful which break down organic compounds that cause dangerous conditions such as ammonia and nitrite poisoning as well as low oxygen levels. These bacteria improve the development of the biological filter and help clean dirty aquariums. Making Stress Zyme a part of regular care assures an active biological filter, cleaner aquarium, healthier fish and good water quality.


To maintain a clean, healthy aquarium add 5ml per 38 litres of aquarium water weekly.

For new aquariums, to boost the biological filter add 10ml for every 38 litres of aquarium water for 3 weeks.

Dosage Rate:

- 118ml treats up to 870 Litres
- 237ml treats up to 1,779 Litres
- 473ml treats up to 3,558 Litres

Showing our 2 API Stress Zyme reviews with an average rating of Excellent. Would you like to write a review?
Review Summary - 5 out of 5 based on 2 ratings.
April 17, 2018 | Christina
Stress Zyme

Always use this product for my fish tanks

March 15, 2018 | Martin
Stress Zyme

Only just started using this but 2 weeks in and all seems good

UK Delivery

Order before 2:00pm for same day dispatch.

Orders under £49

Standard Delivery Service - £3.95
Delivery takes 1-2 working days.

UK Express Delivery - £5.95
Upgrade your order to next working day delivery.

Orders Over £49

UK Express Delivery - FREE!
FREE next working day courier delivery via DPD Local.


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If for any reason you are not satisfied with your purchase from Pond Planet, you may return the product(s) to us within 14 days of the purchase date for a refund or exchange.

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