1 ml/g lol, ... mate I rehydrate coco pucks for clones in a stronger solution than that. It's hardly 50% of the dose suggested for early veg... actually it's about 15%. So yes, they probably could use a bit more nutrition. With seedlings I usually go with-

first watering 0.5ml/l
second " 0.75ml/L
third " 1.0ml/L
forth " 1.25ml/L
fifth " 1.5m/L

Canna suggest (for medium feeding, with medium water hardness) 1.8 ml/L for early vegetative growth and 2.5 ml/L for fast vegetative growth, I tend to remain under 1.8 ml/L for most of vegetative growth and only get to 2.5 ml/L during transition to flower.

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