Beginner Gardening: Pachira in bad shape - yellow leaves, brown tips - need help, 2 by pachirari

pachirari wrote:
Hello,

I need some help with Pachira that I got one year ago. For a few months all was

good, but then it stopped growing and started to dry on end of the leaves and some

leaves turn yellow and fall off eventually.

We are watering it every two weeks with around 2dcl.

We keep the plant right next to a window that gets direct sun for about six hours

in the summer. It is east-facing, so it is getting morning/late morning sun.

Photo gallery: http://imgur.com/a/GqW9u#0

Thanks in advance