How do I get more potassium to my plants?

drrasta47

drrasta47

Well-Known Member
After checking the diagnosis section, it seems that my plants have a lack of potassium. They are on day 36 of flower, and nearly all of the fan leaves look papery and feel rough to the touch. I had an issue with heat when I switched from my 400w MH to 1k HPS and had a little burning occur with a couple of the topmost leaves. I moved the light up and upped airflow, but also watered once a day for 3 days instead of once every other day. Did I overwater? I keep trying to take pictures, but the light messes up my pictures. I tried figuring out shutter speed, but it's a piece of shit. The leaves aren't really discolored, but are drooping and rough/thin? to the touch. Any ideas? Any input is greatly appreciated!
 
doc111

doc111

Well-Known Member
drrasta47 said:
After checking the diagnosis section, it seems that my plants have a lack of potassium. They are on day 36 of flower, and nearly all of the fan leaves look papery and feel rough to the touch. I had an issue with heat when I switched from my 400w MH to 1k HPS and had a little burning occur with a couple of the topmost leaves. I moved the light up and upped airflow, but also watered once a day for 3 days instead of once every other day. Did I overwater? I keep trying to take pictures, but the light messes up my pictures. I tried figuring out shutter speed, but it's a piece of shit. The leaves aren't really discolored, but are drooping and rough/thin? to the touch. Any ideas? Any input is greatly appreciated!
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Without pics?????????????:confused: We could all just venture a guess and maybe somebody will get it right. If you think it's a K deficiency then you need to fertilize. If your medium isn't drying out a bit between waterings then you probably overwatered. In either case you need to fertilize or back off of the waterings a bit. You don't want to let them wilt but you want the medium to feel dry to the touch and the pots to feel lighter than immediately after a good soaking. Just relax, don't try to do too much at once and you'll be fine.:leaf:

Happy Growing. :weed:
 
drrasta47

drrasta47

Well-Known Member
doc111 said:
Without pics?????????????:confused: We could all just venture a guess and maybe somebody will get it right. If you think it's a K deficiency then you need to fertilize. If your medium isn't drying out a bit between waterings then you probably overwatered. In either case you need to fertilize or back off of the waterings a bit. You don't want to let them wilt but you want the medium to feel dry to the touch and the pots to feel lighter than immediately after a good soaking. Just relax, don't try to do too much at once and you'll be fine.:leaf:

Happy Growing. :weed:
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Okay I will figure out a way to get some good quality pictures up here tonight when the light comes on.
 
drrasta47

drrasta47

Well-Known Member
I looked on google for potassium deficiency, and this picture is pretty much exactly how my leaves look

http://i137.photobucket.com/albums/q237/zzStasis/Grow/8-14nutrientdeficiencyK2.jpg

I had the clones in 4" rockwool cubes, set 11 of them in a storage tote, and filled it with hydroton. It's got a hole in it 1/2" from the bottom that drains into an identical one. Super ghetto $5 setup. I use Sensi Bloom 2 part nutes at 1.75tsp/gal. Should I up nutrients in order to get more potassium in the mix?
 
drrasta47

drrasta47

Well-Known Member
I'm going to get a picture up in about an hour, but I went to the hydro store today with a couple fan leaves and they said I was looking at calcium/magnesium deficiency, so I picked up some Cal Mag that I'll add into their water tonight. I'm hoping I can make this end well; it would suck a penis to have some big problems this close to the end...
 
drrasta47

drrasta47

Well-Known Member
doc111 said:
What kind of water are you using? R/O, distilled, tapwater, rainwater, etc.????bongsmilie
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I'm using tap water, pH around 5.8

mississippi said:
whats the temps
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Around 85 in the closet. Ventilation (or lack thereof) has been my main issue with this first grow of mine. I have an 8" fan mounted on the wall halfway between the plants and the light, and a larger fan next to the tub aiming toward the light in an attempt to keep it cool. Is it possible, even though it feels comfortable for my hands where the plants are, that it could simply be a lack of air circulation in there that is messing with me? It would make sense, seeing how I started noticing these problems immediately after the light change, but I thought I handled it. Am I wrong?bongsmiliebongsmiliebongsmiliebongsmilie:wall:
 
doc111

doc111

Well-Known Member
drrasta47 said:
I'm using tap water, pH around 5.8



Around 85 in the closet. Ventilation (or lack thereof) has been my main issue with this first grow of mine. I have an 8" fan mounted on the wall halfway between the plants and the light, and a larger fan next to the tub aiming toward the light in an attempt to keep it cool. Is it possible, even though it feels comfortable for my hands where the plants are, that it could simply be a lack of air circulation in there that is messing with me? It would make sense, seeing how I started noticing these problems immediately after the light change, but I thought I handled it. Am I wrong?bongsmiliebongsmiliebongsmiliebongsmilie:wall:
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Diagnosing plant problems is like being Sherlock Holmes. It's extremely difficult for others to tell what the problem is since many problems look identical. You could've shocked them a bit if they didn't get a chance to acclimate to their new environment. Check out my water thread (in my sig). You could have hardwater or some other water related issue although I doubt it. Have you fertilized yet? :blsmoke:
 
drrasta47

drrasta47

Well-Known Member
Yeah, and added some Cal Mag and Gravity, but I don't think that it is helping. I will have a chance to take some more pictures in about an hour and follow up.
 
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