Nearly all of my lights came from Amazon, but there is a huge difference in types of lights. Some grow bulbs are for a hobbyist with a few African Violets or Orchids and other fixtures, like LED quantum boards are for serious growing. Problem with many lights and bulbs is that they are not powerful enough to get good light penetration throughout the plant. You can get a lot of top growth at the expense of bottom growth which will mean loss of lower branches. I can't tell you what kind of light to get because there are thousands to choose from and dozens of different types of lights. All I can suggest is to buy the brightest light that your money can buy, for this is a plant that demands high light. If it doesn't cost a hundred dollars or more, it may not be enough. And brand names are important because despite the promises made, most inexpensive lights don't last long. I have thrown a lot of fixtures away that simply stopped working or stopped performing properly. A lot of money has gone into the trash. I am making the switch to Spider Farmer lights where I need high light and durability. Shop lights and grow bulbs are ok for less demanding plants like ficus, but even those would prefer higher light levels. If you are using plant light bulbs be sure you have light near the bottom of the plant as well as light on top.