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Discussion Starter · #1 ·
I purchased this Betta from a petstore three days ago.
I think he has fin rot- he has a small hole in his fin and they also appear
to be curling. He was like this when I picked him up- I don't think it is
getting any worse.

I have never owned a betta before ( I bought this one as he looked so
sad in his tiny "tank" at the store) He is very active and eating freeze
dried blood worms- he keeps spitting out the betta pellets though..
The tank is a 5 gallon with heater/filter. It is uncycled, however I am
doing regular 35-40% water changes (every second day). I have added
aquarium salt- should I be doing a full water change? And does this look
like fin rot? His tank had three live plants and some smooth pebbles.
 

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When adding salt, it's easier to keep them contained in something smaller- as you need to be doing 100% daily water changes with it. Salt isn't good for them over long periods and should only be used for up to 7-10 days.
Salt also isn't good for freshwater plants.
So it'd be easier if you got him into a med tank.
Yes, it does look like fin rot, but fin rot usually isn't a serious issue and often times will heal on it's own when paired with proper water changes.
You really don't need to be doing the amount you are now, lol. For a 5 gal (unfiltered), 70-80% once a week should be fine.
 
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