[bige.choi689]

im doing a soil grow, and i was wondering how much water you should use for each plant when im feeding. and how often do i water/feed my plants?

[Dr Dog]

You should water/feed until it comes out the bottom of your pots, making sure you get all of your medium

You should be watering when they need it. So when the pot is light when you lift it, water/feed them

[SergeantGod]

Correct!!! Learn the weight of your pots and you will develop a rhythm. I feed every other time and every three days.

[fonzee]

I water when the top 2" or so of the medium as bone dry.
If I stick a finger and its moist below I just water the surface. If its dry for the top half or so I water until I get a runoff.

I water at most every 2 days and I'm using coco\perlite (50\50) which hold WAY less water than soil. Its around 28°C in my grow room with a 20" industrial fan blowing on my SCROG at full speed.
In soil I used to water every 5-10 days.

If you need to water more than every 3 days you should transplant to a bigger pot unless your in the end of flowering and then you should know to use larger pots next time. (Or grow smaller plants)

[LUDACRIS]

https://www.drugs-forum.com/growfaq/17.htm