Is This Fin Rot?

Lex1

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I made the mistake of doing a 100% water change since my tank was cycled and I thought it would be okay. My betta was completely lifeless laying on a plant when I came home when he normally swims to the front of the tank and all over when I get home. I assumed it was from the water change mistake so I did a 50% change to help with ammonia. It has not helped his activity level and I m not sure if that’s normal. If he goes by his plant he’ll lay there for about 10 minutes and move somewhere else, just to sit there for another 10 minutes.

I also noticed he has like a black outline along all of his fins. For the life of me I can’t remember if he’s always been like that or not. He does have a darker body and I don’t notice any holes or tears in his fins so I’ll post pics to see what y’all think. Does his inactivity after a 50% water change sound normal also? He’s eaten his normal twice a day meal but he’s never been this inactive.
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Discus-Tang

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I think the 100 per cent change would only help finrot go as it is not stress/ammonia level related. It's either bacterial or fungal. Also I think this is what a betta does after rehoming or stress, so this would be caused by stress.
 

appcontrol

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Keep water in best condition. Never do 100% water change better is to do daily smaller amounts like 30% If it doesn't go better but it goes on worse after few days you can use fin rot meds.

Keep water in best condition. Never do 100% water change better is to do daily smaller amounts like 30% If it doesn't go better but it goes on worse after few days you can use fin rot meds.
 
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Lex1

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So it does look like fin rot? I wasn’t sure if it was or not. His activity level has picked back up So I’m not as worried as I was. I think that 100% water change might have shocked him in some kind of way. Maybe just the stress of the move or maybe I did something wrong. I’m going to start the 30% water changes and see if I see any changes in his fin coloration.
 

appcontrol

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Lex1 said:
So it does look like fin rot? I wasn’t sure if it was or not. His activity level has picked back up So I’m not as worried as I was. I think that 100% water change might have shocked him in some kind of way. Maybe just the stress of the move or maybe I did something wrong. I’m going to start the 30% water changes and see if I see any changes in his fin coloration.
I think it is but is not bad. Just keep water fresh and I think that there is no need for daily water change. 100% water change did shock him and don't do it again. Good luck
 

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