| | Re: Lighting question
Frankly, I don't see a problem. Javas do not need much lighting typically, but too much lighting will probably show up as algae throughout the tank before showing any issues with the Javas. Sometimes it just takes them a little time to acclimate to their new tank.
On the far left leaf, you can see the roots forming where babies will soon start to grow.
Your tank seems fairly barren of plants. How much lighting do you have over it? What kind of dosing/maintenance are you giving it?