Hi there am ripping up the decking and fencing and will be adding some Acho drains one along the house where window is into a drain like one in picture behind the white air source, then one along where the bar is into another drain but may question is what’s easiest way to connect them to the drain as I was just going to put hole into the concrete around the drains for it to just run into but then got me thinking is there a better way etc