[Phoenix-D]

"I haven't used his training facilities for a while) is that level one goes up to 15%, with 3% gained per turn (maxed in 5 turns). Level 2 goes up to 20% but with only 2% gained per turn (maxxed in 10 turns). Level 3 goes up to 25%, with only 1% gained per turn (max in 25 turns!). So to get the higher % takes much more time. I thought that was a pretty cool idea."

Or if you build all three it's maxed in 23 turns, total.

Phoenix-D