Talk:Resource Buildings/@comment-18145300-20130909235448/@comment-11733558-20150518042107

Or you can make it 1 gem per 2 mins, because things charge 1 gem per 2 mins, so:

Lvl1: 30/h

Lvl2: 60/h

Lvl3: 90/h

Lvl4: 120/h

Lvl5: 150/h

Lvl6: 180/h

Lvl7: 210/h

Lvl8: 240/h