MAKING CALCIUM SUPPLEMENTS

I have googling for several days to find out how to resolve fruit rot problem.
Our peppers, especially ornamental peppers get rotten during this very wet rainy season.
Then I found a simple technique, add more calcium on the media.
So, I reuse egg shell as calcium suplements.
The egg shell then crushed and 'fried'.
So, it's ready to be spread on the media