What else do I need?
Looks like melt, probably too much light with not enough fertilizers. You should consider getting some dry fertilizers, you get the biggest bang for you buck that way. You can make your own liquid solution by following Zorfox's guide. You can also get some root tablets that are sold by a lot of people here of TPT and stick them into your substrate every 4-6 inches as needed, and replace every 3-4 months. Like wise if you don't want to use fertilizers I would only use one light bulb for 8 hours and you can have the second one turn on for an hour or two if you want but it should be off for the majority of the time.