Depending on the coral you want will determine what lights and flow you want, softies and LPS
require less intense light and lower flow, for sps
they require intense light and higher flow. I run a 55g reef with softies LPS
and have a 6 bulb 4 foot t5ho light and have 1050-2450gph of flow(I use a wave maker) honestly though for the cost of it look into getting some dimable LEDs, hopefully someone can chime in on some brands and include some links. I wish I had gone that route but didn't. Again the lighting and flow all depend on what you want to put in the tank, also keep in mind that most fowlr
tanks are reef tanks in the making so plan to get coral lol.