Hello everyone !

I need your help. I was recently gifted a 7 year old bonsai wistera. 1 month ago, the leaves were green!
But recently the leaves are spotted. They are lighter and also dry. I don't know if it's chlorosis, a watering problem. I wonder if the problem is not my tap water.

The bonsai is exposed to the sun. There is a new branch with very green leaves. But everything else is spotted.

Please some photos attached

Thanks for your help !!

Regards,Ethan

Is it outside?

Yes it is

Check for aphids

I checked and no aphsids.

I will try to water it with filtered water to see how it goes.

Any other ideas ?