Definitions of some terms!

[lpsreefer]

For growth rates it's also based on type of corals. Mushrooms and zoas/palys grow/spilt in weeks.
Soft corals growth is moderate. For most cases.

For lps there is a lot of different types
Some grow big and some split but there is more to growth rates then just light and flow.
Water conditions is a key factor.
For sps there are slow growers that grow maybe an inch or two every couple of monthes
For fast growers like montis or digis they grow well over an inch every month.

If your asking question about your tank then that's a whole different question

Your lighting if fine but keep in mind with t5s you'll have to change the bulbs every 6-10 monthes.
Your flow is good. If you want to do a little test to see how strong your flow is in parts of your tank. Use a couple pieces of fishing line (about 3 to 4 inches) and tie it to a tooth pick. If the line is parallel ten strong flow as the line sinks weaker the flow.
I hope this helps you.