Watering and Runoff

[Sledrock]

When watering my plants, I read to always water so you get 20% RUNOFF. At what size plant should you do this? (Surely you don't water seedlings or small plants this heavily?) When do you water for 20% Runoff (i.e what size plants, how tall or what age?) - Thanks!

 

[homegrown]

Hey Sledrock, not a pro by any means but i think that depends on your grow medium. This is my first time indoor, used terrible soil mix, probably 50% actual soil mixed with a garden store growing mix. I could never water till 20% run off..i would have to wait a week+ till next water. And soil that wet for that long brings a lot of other problems. I read an article here at GWE and it mentioned watering by weight. Thats what i did..and the girls are doing quite nicely. The only time i ever water till run off is to check my pH out. Hope some different medium growers will chime in here...im all ears cause next grow WONT be with actual soil

 

[Sledrock]

Infrasound, do You water seedling for 20% percent runoff?