API Stress Zyme Fish Treatment



Stress Zyme is a biological filter additive containing live bacteria that improves the development of the biological filter and helps clean a dirty aquarium.

The build-up of organic pollution in the aquarium inhibits the growth of nitrifying bacteria.

The bacteria in Stress-Zyme keep conditions in the aquarium right for the development of the biological filter by consuming harmful organic pollutants.
This speeds the development of the biological filter in newly set up aquariums.

Stress Zyme keeps the biological filter working properly by keeping the aquarium gravel and filter clean.

Water quality and living conditions are improved when Stress Zyme is used on a regular basis.

Each teaspoonful of Stress Zyme contains 300 million bacteria. These bacteria are in a dormant state and become active when added to the aquarium. Stress Zyme has a five year shelf life and does not require refrigeration. Stress Zyme is effective in freshwater and marine aquariums.

Directions For Use:
New Aquariums:
Shake well before using

On the 1st, 7th, and 14th days add 2 teaspoonfuls (10 ml) for every 10 US gallons (40 L) of aquarium water. Thereafter, each week add 1 teaspoonful (5 ml) for every 10 gallons (40 L) of aquarium water.

Existing Aquariums:
To maintain good water quality and healthy biological filtration, add 1 teaspoonful (5 ml) for every 10 U.S. gallons (40L) of aquarium water weekly.

Stress Zyme can be used with freshwater tropical fish, marine fish, invertebrates and coldwater species including koi and goldfish. Stress Zyme will not harm aquatic plants. Keep from freezing. Do not store above 120°F (49°C). Stress Zyme is completely harmless to humans and pets.

Sizes Available:
– 1oz (30 ml) bottle. Treats up to 60 US gallons (227 L)
– 2oz (60 ml) bottle. Treats up to 120 US gallons (454 L)
– 4oz (120 ml) bottle. Treats up to 240 US gallons (908 L)
– 8oz. (240 ml) bottle. Treats up to 480 US gallons (1,817 L)
– 16oz (480 ml) bottle. Treats up to 960 US gallons (3,634 L)
– 1US gallon (3.78 L) bottle. Treats 7,560 US gallons (28,615 L)

#56J – 64oz (1.89 L) bottle. Treats up to 3,840 U.S gallons (14,534 L)


There are no reviews yet.

Be the first to review “API Stress Zyme Fish Treatment”

Your email address will not be published. Required fields are marked *

Shipping Costs

Our shipping cost is €3.99 and is hugely subsidised by us to keep our customers happy.

We have free shipping over €39.99.

About Your Order

We lovingly pack your order with gentle care and gratitude for you supporting our small family run business.

We always use recycled boxes to help do our bit with the environment and are always open to suggestions of how we can keep more green.

Orders are dispatched next day and our courier GLS delivers within 1-2 working days. Please note GLS do not deliver at weekends.

If we do not have items from your order not in stock – we will notify you as soon as we can and this may have delays on your order.

If your order is not received in perfect condition – please make sure you let the driver know and he records any issues so we can deal with this more efficiently.

Related Products