Check out this tread posted by G-man and scroll down to the section on spring. There are a lot of great references created by him and other members listed there to show you how to apply and at what rates.
https://thelawnforum.com/viewtopic.php?f=9&t=1595
G-man has created a excel spread sheet that you can download and adjust the values of the square footage to meet your lawns dimensions as well as GrassDaddy has a YouTube link there of how to apply and he has a link on his video to a calculator you can use based off your square footage to calculate how much Prodiamine to use for you size, grass type, and desired coverage period.
As for the water requirement I believe it states no less than .5 gals/M but I believe most use about 1 gal/M. Some may correct me on that...
https://thelawnforum.com/viewtopic.php?f=9&t=1595
G-man has created a excel spread sheet that you can download and adjust the values of the square footage to meet your lawns dimensions as well as GrassDaddy has a YouTube link there of how to apply and he has a link on his video to a calculator you can use based off your square footage to calculate how much Prodiamine to use for you size, grass type, and desired coverage period.
As for the water requirement I believe it states no less than .5 gals/M but I believe most use about 1 gal/M. Some may correct me on that...