Grasscity - Cyber Week Sale - up to 50% Discount
Food and Drug Administration (FDA) Disclosure:

The statements in this forum have not been evaluated by the Food and Drug Administration and are generated by non-professional writers. Any products described are not intended to diagnose, treat, cure, or prevent any disease.

Website Disclosure:

This forum contains general information about diet, health and nutrition. The information is not advice and is not a substitute for advice from a healthcare professional.

What does 20% runoff mean?

Discussion in 'Marijuana Consumption Q&A' started by Spiderexpert, Oct 22, 2014.

  1. #1 Spiderexpert, Oct 22, 2014
    Sorry for the noob question, but I'm a noob. 
     
    Keep seeing people say to water plants until 20% runoff.  What does that mean and how do I know when I've got 20% runoff?
     

     
  2. #2 lFourTwenty, Oct 22, 2014
    Why would anyone water their plant that much?

    Basically just flushing the soil out everytime you water.
     
  3. #3 BudButler, Oct 22, 2014
    it's basically the water that comes out the bottom of your pot when you water the run off and it's mostly eye balling unless you have like a res under it or somthing also 20% is way to much watering
     
  4. #4 snoopdog6502, Oct 22, 2014
     
    It means the plant is 120% drowned. LOL
     
    Watering to run off is a standard thing to do when growing with Coco but in soil its drowning a plant.
     
  5. #5 lFourTwenty, Oct 22, 2014
    Last edited by a moderator: Oct 22, 2014
    Plus who sits there and tries to figure out what percent of the water has already ran off? Ok that's 3%...17% more runoff and my plant will have enough water. Huh?
     
    Also, 20% of what? The water you started with? 20% of your soil? What if I'm growing in 100 gallon smart pots? There should be 20 gallons of water on the ground before I stop watering?
     
     
    To me, the person who said that sounds like someone who just started growing and is already trying to give other people advice.
     
  6. #6 kingkelly91, Oct 22, 2014
    You want 20% run off in coco to pull the salts out. Otherwise you will have a lockout. But if let the plant just sit in the runoff your doing no good. In coco you should drain to waste. I wouldn't do the 20 percent rule in soil but water until it starts coming out. That is how I used to water soil at least
     
  7. #7 hot cheetos, Jun 9, 2016
    Can't i just flush the plant with plain water prior to adding my nutrient water? Feels like a waste to be watering with 20% of my nutrient water going to waste every feeding. Although i realize this would change the dilution ratio and other factors as well such as PH and PPMs perhaps? I'm not sure.

    How do you coco growers "20% run off"? With the nutrient water or with plain water first then nutrient water?
     

Share This Page