API

API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 16-Ounce Bottle

4.8(12,048)

$15.48

587+ bought in the past month

About this item

Contains one (1) API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 16-Ounce Bottle
Keeps freshwater and saltwater aquariums clean and reduces maintenance
Consumes sludge to help keep gravel and decorations clean
Adds beneficial bacteria for a healthy aquarium
Use weekly to maintain a clean, healthy aquarium

$15.48

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Product details

Brand	API
Liquid Volume	473 Milliliters
Item Weight	544.31 Grams
Item Form	Liquid
Manufacturer	Mars Fishcare

Technical specifications

item_weight	544.31 Grams
department	Unisex-Adult
manufacturer	Mars Fishcare
item_model_number	56E
date_first_available	June 20, 2004
item_package_dimensions_l_x_w_x_h	8.48 x 2.36 x 2.28 inches
item_dimensions_lxwxh	10 x 10 x 10 inches
brand_name	API
target_audience_keyword	fish
directions	Use weekly for a healthy, clean aquarium and to maintain a strong biological filter. Shake well. Using dosing cap on bottle, add 5 ml per 10 gallons (38 L) of water. For new aquariums and to help boost the biological filter, double the dose at start-up and use for 2 additional weeks.
country_of_origin	United States
model_name	STRESS ZYME, 16 OZ
color	multi natural
size	16 oz
material	Plastic
number_of_items	1
style	Freshwater
is_discontinued_by_manufacturer	Yes
product_dimensions	10 x 10 x 10 inches; 1.2 Pounds
best_sellers_rank	#3,398 in Pet Supplies ( See Top 100 in Pet Supplies ) #18 in Aquarium Water Treatments

From the brand

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Customer reviews

4.812,048 ratings

5★88%
4★13%
3★0%
2★0%
1★0%

Customers say

Customers find the aquarium cleaning solution effective at clearing water and helping with algae, while also being easy to use and good value for money.

★★★★★

Great product

Kindle Customer—February 27, 2026✓ Verified purchase

Works great! Simple directions and great value for the price. Read more

★★★★★

10/10

Spencer—February 5, 2026✓ Verified purchase

Works really well with my tank keeping the water clear and helping reduce sludge on the filters which helps maintenance and keeping it running longer Read more

★★★★★

Amazing product. Really works.

AmyN2006—July 13, 2025✓ Verified purchase

The media could not be loaded. I use this weekly, RELIGIOUSLY. I do not miss a dose. This is my tank today, having not touched the filter in 18 months. (Fluval FX6 filled with only biohome filter media and polishing sponges.) I’ve only changed out the live plants when needed (pothos houseplant clippings) and used the magnetic algae glass scraper when needed. It’s a 75 gallon tank. I8 MONTHS!!! I highly recommend this product. Zero odor, zero nastiness. Read more

★★★★★

Great for my aquatic frogs

J.Erickson—December 8, 2025✓ Verified purchase

I use this religiously with my African dwarf frogs! They are still kicking strong after 3 years so it must be working! Read more

★★★★☆

The fish are doing well

Husai—November 4, 2025✓ Verified purchase

I have been using this enzyme solution along with the API chlorine solution for about a year and seems to be working fine. The fish has survived :) It’s a little bit on pricy side. Read more

★★★★★