You're not going to put all ten of those gallons in at once, BTW...
Use the pool calculator (see my sig) to calculate how much bleach you'll add to raise the pool to shock level for your CYA level (30ppm). Make sure you enter in your current numbers in the left column (now) and set the bottom of the calculator table to bleach, troublefreepool.com, and vinyl. Then use the right hand column to enter in the values you want to change to.
Get the kit though, because it's really the only good way to know if you're maintaining shock level. Till then, if you do decide to attempt to shock you'll have to guess what it may have lost every hour. Not easy, nor particularly effective although you could get lucky.
Use the pool calculator (see my sig) to calculate how much bleach you'll add to raise the pool to shock level for your CYA level (30ppm). Make sure you enter in your current numbers in the left column (now) and set the bottom of the calculator table to bleach, troublefreepool.com, and vinyl. Then use the right hand column to enter in the values you want to change to.
Get the kit though, because it's really the only good way to know if you're maintaining shock level. Till then, if you do decide to attempt to shock you'll have to guess what it may have lost every hour. Not easy, nor particularly effective although you could get lucky.