I use full strength nutes right away when I pop seeds, just raise the light away a bit for a couple weeks. You are in coco so set ph to ~5.8 and water multiple times a day You can't over water, Its not soil, you do not need to wait days until the container gets light and dries out, actually you never want coco to dry out at all, I water via timer for 15 minutes 3-4 times a day in veg and every 2 hours while lights on in flower (flood and drain trays, recirc nutes). I use straight canna coco with canna coco nutrients.