My 3 betta fish tail dried

[mehmetketen]

Hello my 3 betta fish tail dired and doesnt eating. 2 bettas die:(.What can i do to stop this stick?(3rd betta fish like recovered but doent eating something) Sorry For my bad English. Thank you!

[Oldfishlady]

Welcome to the forum and sorry your Bettas are not doing well....if you will complete this form and post it along with pic...this will help us help your Bettas....the more info the better....
http://www.bettafish.com/showthread.php?t=49233

[mehmetketen]

Housing
What size is your tank?
25x25x16
What temperature is your tank?
24-26
Does your tank have a filter?
Yes. xy-2830 bio-sponge filter and air pump
Does your tank have an air stone or other type of aeration?
no
Is your tank heated?
yes with heater
What tank mates does your betta fish live with?
only betta
Food
What type of food do you feed your betta fish?
Blood worm but i heard its dangerous and i feed with bettagran
How often do you feed your betta fish?
only Morning(once a day)
Maintenance
How often do you perform a water change?
2 week
What percentage of the water do you change when you perform a water change?
%20
What type of additives do you add to the water when you perform a water change?
Sera aquartan

Water Parameters:
Have you tested your water? If so, what are the following parameters?
no :(
Ammonia:
Nitrite:
Nitrate:
pH:
Hardness:
Alkalinity:

Symptoms and Treatment
How has your betta fish's appearance changed?
yes tails .
before
after but 1 day later a lite bit recovered
How has your betta fish's behavior changed?
yes coward and he s not eating food
When did you start noticing the symptoms?
2-1 day ago
Have you started treating your fish? If so, how?
yes i use sera bactorur,tetracline,methylene blue and sera tablet(i dont know its name)
Does your fish have any history of being ill?
no
How old is your fish (approximately)?
2 monthly

[inkrealm]

it sounds to me like an ammonia issue... I'm not sure what tank size that is... but I don't think you're changing the water enough.... this would result in what we call fin rot, where the tail is eaten away, like in your photo. do you know how many gallons your tank is?

you should probably be doing two 50%'s a week and one 100% ( a 100% includes scrubbing the sides and decor down with hot water, no chemicals. )

can you get fresh water aquarium salt where you are? API brand if they have it... use 1 teaspoon per gallon, mix it into the gallon of water, add in the conditioner to remove chlorine, and let the salt dissolve before you add it into his tank. this should help stop the fin rot. if they have API Stress Coat+ there, add in some of that as well. it will help his fins grow back. ^-^

if you guys have Indian Almond Leaves or Oak trees there, Oldfishlady can also help you with something called Tannin...which is great for fish. ^-^

[mehmetketen]

Tank size is 25cmx25cmx16cm 2.64172052358148 galon.tain not eaten.yes fresh drink water. Thanks :)