Hey guys,i need some help in breeding WTF.

I currently have 10 full adult frog in a 4 feet x 2feet x 2feet(Height) tank with 3inch of water and lots of lava rocks and branches and wood in it with a rain bar running at a corner left side of the tank.I was wondering beside a rain chamber... what else is needed to breed them.

1)Do i need to lower low the water temp when i am using the rain chamber?
2)Any changes in the daylight hours?

Thanks