Watering from the bottom up?

Psuedo

Well-Known Member
I was just wondering if anyone knew about doing this if it has and benefit, or any cons?
The wind is whipping my plants are soaking up lots of water the two smallest one's were drooping from all the wind, and being in small pots. So I figured to keep the water in for a few minutes I put the pot in another pot with water in the pot I was putting the plant in. Let the water soak in from the holes in the bottom pushing everything up instead of letting it flow down. The only con I can think of not really knowing about this method is people say salts, and what not get built up at the bottom due to watering everything draining down. Would this push all that unwanted stuff up, raise the ph, or anything? I just thought it was a pretty good method, so I'm going to research it now.
 

GreenChile

Active Member
Well I actually got some experiance in this, I even designed my own growing system that rocks socks.
Basicly when you pour water and fertilizer over the soil on a regular basis, it can create a hostile environment for soil fungi, which aids in nutrient uptake.
Soil health dictates the health of your plant, so if your soil is healthy, your plant will be healthy.
Believe it or not one of the best and easiest methods to grow great pot is with an "earthbox".
Because the water is below the soil, your plant will eat from the soil, and drink from a seperate chamber. Once the plants roots drop down into the water, the plant can eat and drink at its own will and you dont really have to worry about over fertilizing.
My design essentially took that one step further and added a fish tank air pump to help aeriate the water and provide fresh air to the bottom of the bucket, which povides oxygen to the roots.
Its basicly an earthbox meets dwc hyroponic system.

....Anywho, the way you described watering from the bottom up is different than what I described. I think you should try growing a plant or two with your bottom up watering method and compare the results to a few regular top to bottom watering.
I can tell you for sure that my growing style has yielded very favorably.
So start experimenting!

oh and btw, no, salts wouldnt migrate to the top of your soil by watering from the bottom up. They will always fall to the bottom due to gravity.
And because your putting your plant container in a seperate container with water, and watering it via capilary action, the salts will actually travel out the bottom holes of your plant container and into the seperate container with water in it everytime you water. (osmosis)
So if your not growing organicly, your essentially "leaching" the soil everytime you water. But thats all in theory, so do some experimenting :)
 

yermom

Member
I've been playing around with this my last few grows. I grow in a 60/40 mix of promix to perlite in foot-pots using foxfarm nutes. I've heard the disadvantages, such as toxin and salt build up. Persaonaly I have had great success with the bottom feed though. I find one plain water is all I need during an 8 week flower and can hit my plants with 100% strength nutes every 6 days without any burn. I do grow under 1000 digital watts and use Co2, which helps them handle the extra food, you may need more plain waterings. The advantage I see is noncompacted pots and a propensity for the roots to grow down and form a solid ball very early. All my root balls have been thicker since switching. I just put the plant in a flood tray and dump a gallon of feed/water for every pot. I can't say this is the best way to go, it helps you be a little lazier in crowded rooms that require some effort to water plants in the back. Less attention rarely equals better plants and in the end I've been slowing switching to a recirc DWC. Which blows away the rest of the room. The nice thing is, you don't have to do every plant. Get a small rubbermaid tote that's just large enough to fit a pot a gal of water and do just a few this go round. Individual trays also let you water a plant when it wants. Unlike a tray with several plants which requires you to apply water to every pot that may not want it yet.
 
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