Anyone with DIY LED experience?

[Nano]

I am looking to supplement my double strip t5ho with led day and lunar, but dont have a clue how, I have some cheap ones right now, but they arent doing the trick for me, and are very awkward in size. Anyone able to steer me in the right direction? I know I need between 10,000-12,000k and 420-460nm? if that sounds right.. but other then that I'm hooped.