Warm water, huh? I never tried that.
But an extra light bulb for a few hours will increase their lay as well.
They lay about every 22 hours I believe, and it's sometimes feast or famine.
About Dec through mid Jan, or something like that, they get very slow and you'll be buying eggs.
One rooster for two hens is a small ratio. I wouldn't recommend any less than 6 or 8 hens if you get a rooster.
Those roosters can get rather... forceful. It can kind of spoil dreamy state of mind we get in, imagining our sweet little chickens, clucking away, peaceful and contented.
You will find yourself jumping off your chair and running over chasing him off while your poor hen bleeds.
And if you don't want more than 2 or 3 hens, I'd not bother with letting one set.
They don't usually set with only a few, so you'd have more than you wanted and then wonder what to do with 8 roosters and 5 hens.
I do love having chickens.