What size is the enclosure? How long ago did you plant? What's the humidity like? There are many reasons why leaves can go yellow. Are all your plants turning yellow? Or just some? A pic would also be helpful.
its 45 by 45cm and 60cm tall about 3 -4 weeks ago i planted it, no just some of the leaves are starting to go and one of my climbing plants looks like its starting to die, and humidity is 83%