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Cursed! Killed 3 Bettas! Help me!!!

Kurtanius21

Registered Member
I am so disappointed. I am doing something seriously wrong.

I am a Betta fish wannabe owner. I inherited a Betta fish from a coworker. He was in a 3 gallon tank for about 6 months, then died. I have no idea what his age was before inheriting him, so I was ok with his lifespan in my newbie hands. I am a first time fish tank hobbyist.

But in trying to replace him, ive killed 3 Bettas in the last week! I’ve replaced the water, even tried using anti-fungal API products and their anti-bacterial line. I’ve done some reading online to diagnose what I’m doing wrong.

Tank setup. It’s 3 gallons, with 2 live plants. I got a cheapo filter that came with the tank and a small heater set to 77 degrees.

Death: the fish get covered with some sort of fuzzy white mold looking stuff. I have read online that it could be either a fungus or some kind of Columnaris bacteria. I tried both API products and they haven’t worked to save the latest Betta. These Bettas all die within 3 DAYs of putting them in the tank. Each time I thoroughly remove all the water for the next one.

Thoughts: did the 2 live plants I ordered carry the parasite?

Did the dead fish’s rotting corpse from the first death permanently contaminate the gravel with Letha bacteria?

What can I do to fix this awful trend? I really want to keep a Betta, but I am sad to be killing them! Please help! I have tested my water, and everything seems ok, except for a high PH of 8.
 

OrionGirl

No freelancing!
What are the exact test results? Did you inherit the tank as well as the fish? Is the fuzzy growth on the fish before, or only seen after they die?
 

fishorama

AC Members
I would do a serious tank cleaning with bleach, lots of dechlorinator & a new round of cycling (see "before your get fish" in the newbie forum) before trying a betta again.

Something is wrong; like OG asked, what are the test results? (you can often get them free at a shop, but you need a liquid test kit of your own). Dead fish can quickly grow fungus looking stuff...not necessarily a cause of death.

How often to change water & how much each time?
 
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