Tetra Lifeguard All-in-One Bacterial & Fungus Treatment

By Tetra
Rated 4.3043 out of 5 stars


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$6.29Chewy Price
$10.09Chewy Price
$5.98Autoship Price
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About This Item


  • Treats broad spectrum of fish diseases
  • Contains powerful oxidizer and will treat ick, fungus, mouth rot, and more
  • Convenient pre measured tablets
  • Use as a preventative, may be used when adding new fish
  • Treats up to 12 gallons

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Tetra Correct pH 7.0 Freshwater Conditioner, 8 count
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Fish TypeTropical FreshwaterMarine Fish, Tropical FreshwaterBetta, Bottom Feeder, Cichlid...Marine Fish, Tropical FreshwaterBottom Feeder, Cichlid, Goldfish, Tropical Freshwater
Aquarium TypeFreshwaterFreshwaterSaltwater, FreshwaterSaltwater, FreshwaterFreshwater

Questions & Answers

30 Customer Questions

Is this product safe for african dwarf frogs and aquatic plants?
Answer by ChewyJan 25, 2019
This product is only intended for use with freshwater fish that have scales.

Are snails affected by this product? would I need to remove them?
Answer by ChewyJan 25, 2019
The snails would need to be removed as this product is not suitable scaleless fish, invertebrates (shrimp, snails, etc.), or newly set up tanks.

What are the active ingredients?
Answer by ChewyJan 29, 2019
The active ingredients are 1-Chloro-2,2,5,5- tetramethyl-4 - imidazolidinone.

In the description, it says it treats up to 12 gallons, is this per box or per capsule?
Answer by ChewyMay 29, 2020
This product treats 12 gallons of water per box.

ReviewsWrite a Review

Rated 4.3043 out of 5 stars
23 Ratings
Would recommend to a friend

23 Customer Reviews

Rated 1 out of 5 stars
By Sara on Nov 3, 2023

Terrible. Killed all my fish!

This is supposed to help your fish. And it killed everything I had in my fish tank! All my fish and my sucker fish got this nasty looking white slimy film all over them and they all died not even 24hrs later! Do not recommend this product unless you want to replace everything!

Rated 5 out of 5 stars
By Gordy8 on Sep 27, 2023

Fish Medicine

Chewy has this fish medicine at a great price and is not available at stores.

Rated 5 out of 5 stars
By Tammy on Jul 29, 2023

I had a sick fish, this product worked great, this fish is well and healthy.

Rated 2 out of 5 stars
By Theresa on Feb 19, 2023

Fish antibiotics

Easy to used & cleared tank with fish doing better.

Rated 5 out of 5 stars
By KRhyde on Sep 10, 2022

Great product

This product was able to save my betta fish. He looked so much better and his fins improved in only two doses. I will continue buying this and recommend for anyone with a sick betta

Rated 5 out of 5 stars
By DJT2004 on Aug 28, 2021

literally a lifesaver

We are new aquarium owners who have unintentionally caused the death of 7 fish. It was awful. We had three survivors but they started to look sick. One had white spots all over. The other looked like it had rotting fins. They were lethargic, living at the top of the tank. I bought everything at the store to improve the nitrite levels. I did water exchanges. Nitrites continued to be critically high. I was told the fish probably wouldn’t make it, but was given this product along with bacteria starter for the tank. Within two days on this medication, my fish came back from the brink of death. They started eating again. All of the white spots were gone. Now, 10 days later, they are happily swimming around the tank and even seem playful. I can hardly believe it. They were better even though the water quality still had critically high nitrites, thus it was not the water conditioning products that saved them short term. I am on here now buying some extra medicine to keep as back up. We live in a rural area and with the pandemic it is hard to find specific products. I can’t wait for the nitrites to normalize so we can get them a few more friends. New tank syndrome sucks.

Rated 5 out of 5 stars
By allen on Jul 30, 2021

fishy stuff

The fish supplies we buy from chewy helps the aquarium stay healthy for the fish.Also the frisco cat scratcher is really sturdy. We bought a couple of them the cats use them alot. Also chewy has very reasonable prices.

Rated 5 out of 5 stars
By Guopies on Aug 4, 2021


This is a remarkable product when first recieving any fish to be used during g the quarantine prosser. I highly recommend this as an added medication to your arsenal.

Rated 5 out of 5 stars
By star on Jun 27, 2021

The BEST for fuzzy fins, fin rot or Betta turning grey!

Kanaplex did NOTHING!! Original lifeguard did nothing! New lifeguard all in one HALO is the best you can get for most gosh diseases! Trust me! I have a Betta business called Fish Fairie fun house. I use this weekly for most diseases

Rated 5 out of 5 stars
By Cindy on Feb 24, 2021


Bought this for my African Cichlid. I bought a smaller bottom feeder to put in with my cichlid. Little did I know, it had some sort of parasite/fungul issue. After just 3 days my cichlid whom I have had for 4 years with no issues, developed a sore on his side and it had what looked like cotton around the edges. After 5 days of treatment with this, he has perked up considerably and is doing much better. His colors are coming back :)