名媛直播

Hey everybody i am new to 名媛直播 empire and am growing my first delonix regia. I started her from a seed and she is 4 months old. I water her daily and give her 6 hours of red UV light a day. In the pictures you can see her bottom most set of baby branches have the leaves turning yellow and falling off but her upper most leaves are totally fine. Any comments on if this is normal or am i doing something wrong?

Please upload some pictures of the seedling.
Thanks.

It's a tropical, so it likes being outside in warm weather, plenty of sun and watering.
Inside they struggle, and can be ill easily.
Some of mine get a fungus sometimes, they lose some leaves, I spray them with fungicide and they get better after a while.
But as many here know by now, I am in Brazil, which makes things easier when growing tropicals.