You really should search the net for a feed chart schedule if one wasnt provided when you bought the nutrients, it will save these "beginners errors".
the plants look fantastic in the pics provided the holes and etc is probibly from you spilling nutrients onto the leaves, which is a huge no go.
if you choose to hand-feed your plants you must be careful not to splash any nutrient solution to the the leaves, especially for a new grower it can make it seem the plant has deficiencies that arny really there because it burns/stains the leaves.
Are you using MH globe?
If so those 8 sites will quickly turn to 28

.