Watering depends on the type of coco and its drainage properties. When its dry water it, but try to not let it get too dry. Also depends on the pot size smaller pots like my gatorade bottles need to be watered more frequently. with that said, my seedlings got watered once a day at the least, and in full flower less then twice a day would be suicide for yield and the plants don't look too good

for the nutes you should already be feeding them or have already fed them. veg nutes every day every watering (strength appropriate for their size). when you flush, once a week or two, flush then nute immediately after or you will see deficiencies.

coco is an unusual medium, and I feel that everyday I learn a little trick or a better way to do something. its something you will just get a feel for, its not soil, and its not fully hydro, its somewhere in between. after reading that article, my next run will be HESI or CANNA nutes exclusively - so I can follow their coco feeding chart and try to avoid N, CA/MG deficiencies easily