Yup ?...? Ahhhh WelchieLight is too far away. Or not strong neough.
Would love to possibly help but will need a LOT more detailed info. Just wild guesses with just what info is supplied.
Are they still under a humidity dome? That would make them stretchy as well. I think that I see a dome in your picture?
I think that @jaguarlax was asking about what Kelvin you were using. T5's come in a few spectrums.t5 leds