here is a picture of my first 20gal under 65watt Coralife PC. I used to run pc and it wasn't bad. The one thing i noticed with the lower PC is my soft corals were extremely happy but I am sure if I was running a 2 bulb T5 i would have gotten better results.
My one issue with reccomending a lower light fixture is there will always be some coral that you will want which will require more light. so it is best to start with that straight off the bat.
