No you should be good from what I saw this was the first fully saturated water you did. Since your in a large pot right from the start watering is a bit tricky and you don't want to fully saturate with runoff until she grows into the pot( 4th or 5th node ). Which is when you start feeding stronger strength's of nutrients.
As for nutrients I think your going way to strong. Just looking at other diaries(
growdiaries.com/nutrients/fox-farm/grow-big ) that use the same nutrients I am seeing late veg plants being fed 10ml/gal. So I would drop your dose down to 2ml/gal and then increase to 5ml/gal. when she gets larger( auto eat less )
Your using tap water so it is recommended to let the tap water sit over night to air off the chlorine.
Good luck and Happy Growing.