Flowering during the summer, my plants take about 1 1/2 liter each per day. Once a week I skip a watering to prevent problems. BUT during winter, they only take a liter every other day.
I don't think it's safe to give a number amount... every plant is different and every situation is different.
When dry, water until you see a drop come out of the drain holes. Now that's how much water the pot can hold. Then wait for the top inch of soil is dry. Now that's how long you should wait between waterings.
The best thing to do is just to water when it gets dry, or the pot gets light when you try to lift it.
You get a feel for it really.
Hope this helps.
hi everyone im new to this site im starting a grow i know most things but have never hand fed the plants does anyone no how much water to give them each, ive been told 200ml a day for first 2 weeks and 400ml each day for the rest, but i also got told that when the plants are big and flowering they can easy use 1 litre a day, can anyone help thanks