Looking very good, so far you have a nice even canopy. Best wishes & luck for flowering ๐ also looks like you should get a nice yield with all the Bud sites you have created from training them.
i do not know how to change the nutrient from tsp to tbs but i use 3 tablespoons of gaia green all purpose per gallon of media
i used 1 tablespoon of bone meal per pot
and .40 of a gram to a gallon of waterr of kelp extract