So I'm 8 weeks on Monday into veg. Using pro 7 soil and perfect ph technology . I've been mixing me feed 4ml per litre and giving plants 3 litre water each . The small bushy heavy grape is looking great but the other few especially the tall backlava isn't looking great , my instinct is I'm underwatering but at same time I'm afraid it's over ....I'm really not sure , any tips would be greatly appreciated. Thanks