My Betta has a white patch on its side...

[ANHEL123]

I think plants or at least a lot of them not salt tolerant. So you can remove them and just put them in the water with water conditioner if you ever need to treat ...

But if your fish behavior normal and he is eating and there is not other symptoms develop,do not treat him.

If you ever need to use aquarium salt i can give you advice. Don't follow instructions on the box. When you are using aquarium salt you need right dosage and right duration or it not going to help.

Also if your tank is not cycle i really don't recommend to do 25% water changes, it really not enough.

I will recommend to do what i do for my 5 gall. I do 50% weekly and 100% every 3 weeks. I also syphon the gravel weekly.

If you don't want to do 100% water changes i recommend to do 50% twice a week with weekly gravel syphoning.

[Katniss]

I will take your advice and increase the percentage of water changes. I like the 50% 2x weekly option.

Still no change in the white spot. It is very hot today and his tank is up to 84 degrees. (I usually keep it at 78.) But King William is still acting normal.

Thanks for taking the time and an interest. I will keep you posted. :)

[ANHEL123]

oh good , still need to siphon the gravel weekly:)
Good luck .