Need help New sump e-300
 

I purchased new sump Eshops-300 came with drain 1”flex hoses is it ok to use for drain even if hose is bended ( see photo) will that affect drain volume flow ? Or should I do hard plumbing but there is only 15” distance from tank bulkheads to sump .

You could go to a local pool store & try for a shorter hose.
OR--
Can you make it spiral downward?
It will work but with a loop like that the hose will sag & retain water.