Too much light for low tech 55g?
I was looking to get started with my first planted tank. I have a 55g tank and a 29g tank. The current lights that I have for the two tanks are not ideal for growing plants, so I was looking to upgrade. I was looking to save money, so I went to home depot and found this light fixture for ~$40. They also sold the bulbs I would need for this (t5 54w 6500k) for ~$10. Would this be too much light for a 55g tank?
Tank specs: 48" x 13" x 21"