Calcium...

Most times it's recommended to dip a mouse/rat in calcium before feeding, from time to time.

I see a couple times this could be difficult.
1) When the snake is off food (like in breeding season)
2) When you feed live prey.

What about calcium in the water? Recommendations? Dosages? Warnings?

I'd like to be sure eggs are as strong as possible.

I have not considered calcium supplementing until now.