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
$29.99
Price: $29.99
(as of Oct 17, 2025 13:22:46 UTC – Details)
Product description
Safe for Animals
When used as directed, safe for horses, cattle, livestock, birds, fish, wildlife, and pets. Contains all-natural bacteria and enzymes. Does NOT contain copper.
Improves Water Quality
Specifically Formulated for use With Livestock
Aimax Stock Tank Defense tablets contain natural beneficial bacteria specifically formulated for stock tanks, water troughs, and other livestock watering containers.
Beneficial bacteria and enzymes break down and remove organic debris, maintaining clear waters for animals to drink. When used regularly, Stock Tank Defense will improve water quality and reduce maintenance.
Reduces Maintenance Improves Clarity Easy to Use
Agricultural & Equestrian Use
Ideal for farm, ranch, barn, dairy, agriculture, and equestrian use. Simply toss one dissolvable tablet into a stock tank (up to 150 gallons) every 1-2 weeks or after any complete water change.
Animal Enclosures & Kennels
In addition to farms and ranches, Stock Tank Defense is perfect for animal sanctuaries, zoos, pet kennels, game preserves, horse barns, or anywhere outdoor watering containers are needed.
Improves Water Quality
Beneficial bacteria are a healthy part of any thriving ecosystem. Sometimes there are not enough naturally occurring bacteria in an environment, and supplemental bacteria treatments are needed.
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Customer Reviews
4.1 out of 5 stars 2,261
4.3 out of 5 stars 296
4.2 out of 5 stars 283
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4.1 out of 5 stars 3,673
4.3 out of 5 stars 1,356
Price
$29.99$29.99 $39.99$39.99 $49.99$49.99
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$18.99$18.99 $26.99$26.99
Application
Stock Tanks Water Gardens Water Gardens Water Gardens Water Gardens Water Gardens
Product Type
Dry Tablets Dry Packets Liquid Dry Powder Dry Tablets Liquid
Amount of Water Treated
1 Tablet per 150 Gallons 1 Packet per 1,000 Gallons 1 Ounce per 375 Gallons 1 Ounce per 500 Gallons 3 Tablets per 500 Gallons 1 Ounce per 500 Gallons
Routine/Maintenance Treatment Intervals
Once Every 7-14 Days Once Every 7-14 Days Once Every 14 Days Once Every 7 Days Once Every 28 Days Once Every 7-14 Days
Initial/Re-Set Application (Use Until Water Quality is Restored)
Once Every 7 Days Up to Every 3 Days Until Desired Results are Achieved Up to Every 3 Days Until Desired Results are Achieved Up to Every 3 Days Until Desired Results are Achieved Once Every 14 days 2 Ounces per 500 Gallons, Once Every 7 Days
Temperature Restrictions
Use Above +50°F Use Above +50°F Use Above +50°F Use Above +50°F Use Above +50°F None
Contains Beneficial Bacteria
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Reduces Sludge & Muck
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Safe for Animal Drinking Water
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Formulated for Livestock Drinking Water Containers
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How to Apply
Use 1 Stock Tank Defense Tablet for every 150 gallons of water. Simply toss the required number of tablets into each stock tank. The tablets will instantly sink to the bottom of your tank and begin to dissolve.
For best results, first clean the stock tank and remove any sludge or debris. Apply once every 1-2 weeks or whenever a complete water change has been made.
Apply tablets when water temperatures are above 50°F.
Restrictions
When used in accordance with label directions, Airmax Stock Tank Defense is completely safe for horses, livestock, birds, fish, and wildlife.
FAQs
What is this product made of?
Stock Tank Defense tablets are a combination of salt-based powder containing free enzymes and naturally occurring viable bacterial cultures. Product does NOT contain any copper.
Will treatment remove iron from the water?
No, this product will not remove any types of heavy metals from water.
Can you use this in a rain barrel?
Yes, Stock Tank Defense can be used in a rain barrel application.
Is this product safe to use with fish?
Yes, when used as directed, Stock Tank Defense is safe for fish, wildlife, pets, birds, and livestock.
Do these tablets work during colder temperatures?
No, the water temperature must be above 50°F for the bacteria to remain active.
Will the treatment harm grass or plants that are located around my stock tank?
No, Stock Tank Defense will not harm your grass or other plants around the tank.
Will treatment get rid of algae or keep bugs from growing in the tank?
No, Stock Tank Defense is not an algaecide and will not control algae growing in your stock tank, barrels, or water containers. It will not prevent green water from algae growth. Product will also not have any effect on bugs in the water, including mosquitos. Stock Tank Defense is a bacterial treatment, and, when used regularly, it will improve water quality and reduce maintenance.
Keep Your Stock Tank Clean & Clear
Easy-to-apply, no-mess Stock Tank Defense tablets are completely safe for horses, livestock, birds, fish & wildlife.
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 50°F.
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.
Customers say
Customers find the water tank cleaner easy to use and appreciate its effectiveness in keeping tanks clean, reducing cleaning time, and maintaining water clarity. However, the functionality receives mixed feedback, with some saying it works well in livestock troughs while others report it doesn’t work at all. Moreover, algae growth and water clarity show mixed results – while some customers say it keeps tanks algae-free and water surprisingly clear, others report green and cloudy water. Additionally, the product quality is positive, though customers consider it a waste of money, and many report receiving broken tablets.
13 reviews for 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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$29.99
MK Lady –
It works pretty good.
I used this in a spring fed water trough. Itâs 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. Iâll keep using.
Dr. Sherry Yale –
clean your stock tank in a flash
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.
Amazon Customer –
They help
Why did you pick this product vs others?:Helps keep the water from turning all green and nasty so quick in the heat of the summer. Â I think it also makes the water tank easier to clean.Â
Gumby –
Great product
This product is amazing. I added it to my 80 gallon tank and had crystal clear water five days later!
Robert B. & KT –
Kind of sort of maybe works??
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!
Jackson Deerfield –
Absolute Trash
Product showed up with the tablets totally crushed and in small pieces. Very disappointed in this product. I expected full tablets so I could use them in my horse’s water trough but could not measure it to keep it clean. Very disappointed.
Nicole B. –
Good product
Works really well!
Kathleen M. –
No Scrubbing
This Stock Tank Defense really works. Iâve only used 3 tablets over 3 weeks and I did not have to scrub the tank. It stays clean unless the animals put their hooves in the tank
Russell Wayne Eller –
I have used this product for years. It keeps the water clean and clear thus eliminating the presence of flies and mosquitoes. Great value too.
Jennifer –
Great for keeping water in ibc clean
Margaret Allan –
The tablets have reduced algae in our horses’ water tank. About half the tablets were broken upon arrival. For a product dispensed once weekly, blister packaging would work better than loose tablets in a jar.
Pam Burningham –
Most of the tablets were broke when I received them
Jackie hill –
We will rate all these items in about a week