Airmax Stock Tank Defense, Livestock Water Trough Cleaner, Clean Drinking Tanks for Horse, Cattle, Goat & Chicken, Safe & Easy-to-Use Cleaning Tablet Treatment for Farming & Agricultural Use, 24 Tabs
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 10 left in stock, order soon!
Arrives
Sunday, May 24
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Size: 24 Tablets
Features
- Keep Your Stock Tank Clean & Clear: Stock Tank Defense tablets contain natural beneficial bacteria specifically formulated for stock tanks, water troughs, and other livestock watering containers.
- Bacteria Treatment Breaks Down Organic Debris -- Beneficial bacteria and enzymes remove debris, maintaining clear waters for animals to drink. Apply tablets when water temperatures are above 50F.
- Easy to Use -- Simply toss one dissolvable tablet into a stock tank (up to 150 gallons) every 1-2 weeks or when a water change is made. Ideal for farm, ranch, barn, agriculture, and equestrian use.
- Improves Water Quality -- Beneficial bacteria are a healthy part of any ecosystem. Sometimes there are not enough naturally occurring bacteria in an environment, and bacteria treatments are needed.
- Safe for Animals -- All natural and safe for horses, cows, goats, deer, pigs, sheep, livestock, poultry, chickens, birds, ducks, fish, dogs, pets, and wildlife.
Product Dimensions: 6.5 x 3.5 x 3.5 inches
Item Weight: 1 pounds
Manufacturer: Airmax, Inc.
Is Discontinued By Manufacturer: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, May 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 6 Tablets
Does as advertised - does GREAT job at keeping the horse troughs cleaner longer than any others we have tried!
Reviewed in the United States on February 24, 2026 by LizaJane
Size: 24 Tablets
Reduces algae in animal water troughs. Animal safe. Good value.
Reviewed in the United States on March 27, 2026 by Elizabeth Goldfarb
Size: 6 Tablets
I’m not sure how this works but I believe it does help because when I forget to use it the tank gets nasty fast
Reviewed in the United States on March 16, 2026 by bigdogwalker
Size: 24 Tablets
This product is great, making cleaning the stock tank very easy and keeps the water fresh longer. I clean my tank every week and the water stays of acceptable quality for that time, and the algae that grows on the sides comes off effortlessly with a scrub sponge, leaving no residual stains or marks. Without Stock Tank Defense, the tank just won't come clean as I like, even with 10x the scrubbing. This product keeps my horses happy and saves me tremendous time in cleaning. It is the best product and totally safe for horses. My horses love their water! On the shipping from Amazon, about 1/4 of the tablets were damaged and crushed, fyi. But I would order again through Amazon due to availability and lower cost than I can find locally.
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Reviewed in the United States on July 5, 2025 by Dr. Sherry Yale
Size: 24 Tablets
We've purchase this product more than once thinking that maybe it'll make a big difference. Maybe it does. Maybe. We still have to clean the 150 gallon water tank for the horses. The claims are big but the results seem to be little. It's not pricey so we will continue to use it. Nothing beats cleaning the water every 2 or 3 days though minimum if you want clean clear water! Elbow grease says it all!
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Reviewed in the United States on May 26, 2023 by Robert B. & KT
Size: 24 Tablets
This is a good product and does what it is intended to do, when it arrives in good condition. I have previously purchased these from a local retail store in the 6 tablet pack. When that retailer was out of stock, I turned to Amazon where I found the product in a 24 tablet plastic container at a more economical per tablet price. However, when the product arrived with the container in a shipping envelope the tablets were broken to bits and pieces. I would suggest the manufacturer fill the empty air space with some sort of filler like cotton to keep the tablets from bouncing around and breaking in the container while in transit. I would also suggest that Amazon or other on line ordering sites, package the container in bubble rap and a durable box so the product arrives in good condition. It is ashamed that a good product, such as this, gets destroyed by delivery services due to handling and poor packaging.
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Reviewed in the United States on August 18, 2024 by Kindle Customer
Size: 24 Tablets
I used this in a spring fed water trough. It’s right in the sun and gets very green. I throw in a few of these about once a month and it seems to take care of most of the green. I’ll keep using.
Reviewed in the United States on October 7, 2025 by MK Lady
Size: 24 Tablets
I have used these tablets in my cattle tanks year round for 2 years now. The only thing difference is I use less tablets in the winter this keeps the bottom junk growth on my heaters . The key is to start with a clean tank. If you want clean tanks this is the product.
Reviewed in the United States on December 6, 2025 by Lonnie Jones