Nutes by size or age of plant?!?

Hi

Greetings from the middle-east

So... let's say I have a couple of plants...same strain same age/stage (1St week of flowering), Both R in a 30 Ltr bucket, one is a normal size - 2 meter tall.. while the other is doubled size ..4 meters tall.
Should they feed the same amounts?
should I keep on feeding them by the schedule table or should i give extras to the bigger one..??

thanks in advance

by size works but consider a rootlet can only absorb so much cations and anions ...