help with nutrients

hey everyone im doing a hempy bucket and just transplanted my 1 inch rockwool cube in a 16oz plastic cup and its 1week and 6days old and i am going to start first feed with liquid karma and pure blend pro grow botanicare and it sais 10 milliliters to 4 lt of water and was wondering if i should do 1/3 or 1/4 or full strenght of it and about how much of the 4lt should i feed it?any advice would be appreciated.

no feedback need advice please.

1/4 strength is what i use when they are that young

thanks and i know its hard to say exactly but around how much of the 4lt do i feed the 160z cup?

you have them just in vermiculite and perlite?

yea and the rockwool it was in