API Stress Zyme Freshwater & Saltwater Aquarium Water Cleaner
Help create a naturally balanced aquarium with API Stress Zyme Aquarium Water Conditioner. Waste, sludge and uneaten food can cause toxic junk, like ammonia and nitrite, to form in your tank. But this water conditioner contains over 300 million live bacteria per teaspoonful to help consume sludge and organic debris, working to keep your gravel and glass clean naturally. Use it weekly in fresh and saltwater aquariums to maintain a strong biological filter and a healthy, clean home for your finned friends.
Key Benefits- Keeps aquarium clean by reducing aquarium maintenance.
- Contains over 300 million live bacteria per teaspoonful to consume sludge and organic debris, keeping gravel and glass clean naturally.
- Use it weekly in fresh and saltwater aquariums to maintain a strong biological filter and a healthy, clean aquarium.
- All natural formula adds beneficial bacteria for a healthier aquarium.
- Helps boost the natural aquarium cycle.
HAZARDS TO HUMANS: Keep from freezing. Do not store above 120° F (49°C). Keep out of reach of children.
Special Note
- 8-oz bottle treats up to 470 gallons.
- 16-oz bottle treats up to 940 gallons.
- 64-oz bottle treats up to 3786 gallons.
- 1-gal treats up to 7600 gallons.
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Item Number94508
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Aquarium TypeFreshwater, Saltwater
Use the API Dosing Cap on the bottle. Shake well. To maintain a clean, healthy aquarium: add 1 tsp. (5ml) per 10 U.S. gallons of water weekly.
Do any of your larger bottle sizes of API STRESS ZYME include a pump?
No, this API STRESS ZYME does not include an option with a pump.
Can I use API QUICK START and API STRESS ZYME at the same time?
Yes, these API products can be combined.
Can API STRESS ZYME be added while fish are in the tank?
API STRESS ZYME can be added while fish are in the tank.
Can API STRESS ZYME be used safely with catfish and other bottom feeders?
API STRESS ZYME is safe for use with catfish and bottom feeders.
How is API MARINE STRESS ZYME different from API MARINE STRESS COAT?
API MARINE STRESS ZYME is not a tap water dechlorinator, like API STRESS COAT. Instead, it works to reduce aquarium maintenance over time, consuming sludge to keep gravel clean and adding beneficial bacteria to boost the natural aquarium cycle.
When should I use API MARINE STRESS ZYME?
You may use API MARINE STRESS ZYME weekly, but especially whenever you perform a 25% water change in your aquarium in order to replace beneficial bacteria. This will ensure that you aquarium cycle continues to function normally for your fish.
Customer Reviews
100% Recommend
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28 Reviews
Showing 1-10 of 28 Reviews
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API products are the best!
By Jayden on Jul 28, 2019
I still tend to over-feed even though I know better. I can't stand the thought of any of my fish being hungry. This stuff works great at eating away excess food at the bottom of the tank. Very often, I hear people talk about using this instead of regular water conditioner. Please keep in mind, this product does not make tap water safe. It does not remove chlorine and chloramines and it does not detoxify heavy metals. API's Stress Coat is still required.
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Great product and service
By Hankmarz on May 24, 2019
Will recommend to friends and family. Use this every time I do a water change. My aquarium is a happy tank.
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Good beneficial bacteria
By Customer45 on Apr 8, 2019
Love love this stuff. I put it in a day after of doing water change and once a week after. Works good keeps tank clean and healthy and looking crystal clear.
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Best Product
By 4mydogs on Mar 18, 2019
I love this product! Easy to use. Just use once monthly to help keep the ammonia and nitrites/nitrates at bay. No adjustments required with any other products.
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Beneficial Bacteria
By Jenny on Jan 10, 2019
I use a maintainence dose every day. Great for when you’ve had a large water exchange; it helps the water vacuum process by adding the beneifical to the decor. The bacteriathen “eats” the nitrites and nitrates and is beneficial to your clean water.
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Very good product
By Donna on Apr 13, 2019
I've been using Stress Zyme for years. I trust that it does what it says it will do.
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It works well
By Pamela on Jan 13, 2019
I have had goldfish and now I have Tetras, and this works well in the tank for any fish.
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LOVE IT!!!!
By Fish0Hobbiest on Sep 16, 2018
I have been an API fan ever since i started fishkeeping (about 3 or 4 years ago) this product works great to HELP cycle a tank and definitely calms down the fish a bit.I always keep this product on my "fish shelf" because i use it a lot even with my cycled tanks.
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Helps cycle your tank
By Emily on Aug 23, 2018
this is my first betta tank, and I was told up until I got my fish that cycling the aquarium was optional. So, to aid my cycle, I bought a bottle of this and Stress Coat. I've been using those instead of regular water conditioner and patience, and my water parameters are perfect and consistent.
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Love this stuff!!
By Kari806 on Oct 12, 2018
I used this last night and its great!! I can't believe how well and how fast it works. I will definitely use this from now on.
