Fungus Guard Tablets

Our Fungus Guard Tablets are a top-notch aquarium fish fungus treatment for fin rot and so much more.
Product No. 77345-00
Find a Store In Stock

Aquarium fish fungus treatment.

Fungus Guard treats a variety of fungus and bacteria-related conditions on tropical fish and Goldfish including fungus, tail, fin or mouth rot, hemorrhagic septicemia, clamped fins, and dropsy.
Fungus Guard Tablets is rated 3.7 out of 5 by 7.
Rated 1 out of 5 by from Killed my shrimp :( I bought this because my dwarf gourami was showing signs of fin rot (30 gallon tank; used 3 tablets). It didn't say anything on the back of the package about invertebrates. I noticed a few hours later that a small tetra I had purchased earlier in the week had died. I went back an hour later and saw that my one and only shrimp had also died. I have had this freshwater shrimp since January and am sad for the loss. I am scared that my other fish might be harmed. I noticed that the tablets turned the water green. The package doesn't say anything about changing the water or doing a second treatment for tanks under 40 gallons. I don't know if I'm supposed to do a water change or when to do that? Will the water eventually clear up? Planning on contacting customer service if I have any more problems.
Date published: 2017-04-22
Rated 3 out of 5 by from So far so good! So my Betta Fiesty Boy has Tail&fin rot as well popeye. I read the reviews about this product, hopefully he gets better. I will write another review after a week.
Date published: 2017-03-17
Rated 5 out of 5 by from worked quick I added a piece of drift wood to my aquarium and fungus started growing on it and then I noticed one of my angel fish had the same growth on it.The fish stopped eating and was lethargic.So I ran up to the pet store and picked up some Beta Fungus Guard and in less that 12 hr.the fungus was off the fish and it was eating.I pulled out the drift wood and boiled it in water to kill the fungus on the wood.
Date published: 2016-08-06
Rated 4 out of 5 by from Minimal Instructions I placed the tablet in my 10 gallon tank and it seems to be working quite quickly! And for that I am happy! But the box comes with little instruction as to how many tablets and how many times to put one in the tank. I don't want to hurt my fish and I also don't know if I need to remove the filter because its a 10 gallon tank. It stated if it was a 40 gallon to take the filter out and change the water but not sure if it applies to my 10 gallon. Other than that it looks to be working but I don't know if Im doing it right : (
Date published: 2016-01-30
Rated 4 out of 5 by from my very sick beta seems more lively since i added this to his 10 gallon tank...he looks like he had fin/tail rot and possibly bacterial infection So far so good...will write again after full treatment is done
Date published: 2013-08-17
Rated 4 out of 5 by from Good Product I recently purchased a Orange and Black Oranda goldfish. Within 2 weeks, I noticed white fuzzy patches on his black. After some research I quickly ran down to my local fish supply store and purchased the Tetra Fungus Guard. As soon as I returned home, I put one tablet in my tank. Problem got better with in a couple of days.Only downfall is lack of instructions on package. Doesn't talk about how long filter needs to be out.
Date published: 2011-09-09
Rated 5 out of 5 by from Works good I had an unknown (to me) problem with my platy fish dying off, with what appeared to be no symptoms. Used Fungus Guard and the problem has not continued. Will gladly use again if this condition reappears.My only problem was with the limited directions, does not say how long to keep up treatment with the filter pad removed and when to begin the water changes. Only talks about if a second treatment is required.
Date published: 2011-08-15
  • y_2017, m_5, d_24, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_7
  • loc_en_US, sid_77345, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_tetrafish

If I have a 55 gallon tank how many do I add ? 

Asked by: Louie07
Hi Louie07, We would recommend adding 4.5 tablets as your tank does not hold exactly 55 gallons, since some water is displaced by decor, gravel, etc. BREX
Answered by: BREX
Date published: 2017-05-01

a new fish I bought has developed a fungus in its fins do I need to treat the hole tank or move it to a separate tank to treat

Asked by: The kid
If it is the only fish affected, ideally it would be best to move it to a small hospital tank for treatment. BREX
Answered by: BREX
Date published: 2017-04-24

I have a 20 gallon tank (divided) one side with one Betta and the other with one Betta and 5 tetra glo lights. The tetras all have fungus and I was wondering if I have to remove them out of the tank to treat; will this product hurt the bettas?

Asked by: 123455555
No, this product will not harm the bettas. Do a partial water change as the illness had its beginnings in poor water quality, then treat the tank as directed. BREX
Answered by: BREX
Date published: 2017-04-18

How to use little at a time

Asked by: Nelda777
These can be cut in half, and possibly quarters, but not any less than that. If you have a container smaller than that, your fish is probably ill due to an environment that is too small for it. BREX
Answered by: BREX
Date published: 2017-04-11

I must reduce size if 1 tablet. Not sure how big should be please help? I have a siamese fighting fish in a 2 L bowl not tank...weight compares to a large bottle of pop. How big a dose? How to do? Fish in or out? Plop in and dissolves? Plz help!

Asked by: Nat1
You will not be able to use this medication in that container. Medication should not be dosed in a container that does not have a filter or some form of oxygen being provided. You have approximately half a gallon, so that would require less than 1/8th of a tablet. Bettas require a home of 2-5 gallons, 7.5 - 19 liters, and a temperature of 78-84 degrees. They do not require filters, but as filters are necessary for medicating situations, it is a good idea to have a small, slow moving one installed. Good luck with your betta! BREX
Answered by: BREX
Date published: 2017-03-10

how often do you use this product.

Asked by: Brownw10
Treatment is once every four days. One to two doses total, over the 8 days, is usually enough. BREX
Answered by: BREX
Date published: 2017-02-16

Hi, can you tell me how many mg of nitrofurazone per tablet are in Fungus Guard?

Asked by: Cindil
The only spec I have is that it is 0.1 - </=2.5%. I do not have the actual mg. BREX
Answered by: BREX
Date published: 2017-02-08

If I started treating the tank for fungus and then something came up and on the 5th day I will not be home to do a second dose, is it better to do the second dose on the 4th day or the 6th day?

Asked by: ELMA
We would recommend doing it on the 4th day. Just do a small partial water change first, to keep your water quality up, and then re-dose. BREX
Answered by: BREX
Date published: 2017-01-30
  • y_2017, m_5, d_25, h_7CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_72
  • loc_en_US, sid_77345, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_tetrafish