Plant Moisture Stress - Symptoms and Solutions

D

db2

Active Member
killeroxx said:
you need a dehumidifier to run at night and better exhaust.....you could be watering them to much looks like...and im seeing heat stress on the first pic...has the room gotten to 90 or more a few times before? Are these autos? If so they are perfect hight for there age :) What are you useing to move air threw the room??
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I did have them in the 90s (90-97) for a few hours a couple times before because I left the grow room closed all the way. I generally have to leave one of the sides open so I can keep temps in 80s. Im waiting on my inline duct fan to come in the mail in the next couple of days so I can connect it to my cooling tube, hopefully it will get the temps in the hi 70s. These are Barneys Farm LSDs photoperiod unfortunately lol...

How come you feel they are overwatered? Also, is 70% bad in vegetation? I could just turn on my fan during lights off(the one I use during lights on...)
 
Life Goes On

Life Goes On

Active Member
db2 said:
I did have them in the 90s (90-97) for a few hours a couple times before because I left the grow room closed all the way. I generally have to leave one of the sides open so I can keep temps in 80s. Im waiting on my inline duct fan to come in the mail in the next couple of days so I can connect it to my cooling tube, hopefully it will get the temps in the hi 70s. These are Barneys Farm LSDs photoperiod unfortunately lol...

How come you feel they are overwatered? Also, is 70% bad in vegetation? I could just turn on my fan during lights off(the one I use during lights on...)
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No. During the vegetative state you want humidity to be ABOVE 50% for flowering you want it to be at about 50%. I believe killeroxx feels as if you might be overwatering because your leaves are drooping on your plants. You only want to water if you stick your finger in the soil to about the second knuckle and you feel no moisture. Another good way to tell when its time to water is by feeling how heavy your pots are. If they are much lighter compared to when you watered them last then it's time to water again. Also there is no key amount of water to give a weed plant. Water till there is a GOOD runoff from the drain holes in your pot. I typically water about once a week when my plants are about your plants size and maybe 2 or 3 times a week once they are full grown. Good luck and Happy Growing!
 
TDM

TDM

Active Member
Prep and planning, and a general idea of what you are doing is the key, the rest will take care of itself.
Have some great genetics but screwed up drainage in two pots...many bases to cover to get it right.
By my stupidity, I have three choices, re-pot after two months veg, bud the plant, or destroy it, all over neglect on my part.
Simple mistake that caused major avoidable problems. "Keep it Simple, Stupid".
 
Uncle Ben

Uncle Ben

Well-Known Member
db2 said:
Unfortunately I can't seal the grow room until I get my duct fan in the mail because heat gets in the mid 90s when it is closed off during lights on.
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How do they look "at dawn", just as the lights come on? Sounds like heat stress to me and for whatever reason the plants are not getting enough moisture either via a rotten root system (over watering) or insufficient watering.
 
D

db2

Active Member
Uncle Ben said:
How do they look "at dawn", just as the lights come on? Sounds like heat stress to me and for whatever reason the plants are getting enough moisture either via a rotten root system (over watering) or insufficient watering.
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The leaves were slightly less droopy but the stems were still looking weak and being weighted down by some of the bigger leaves when the lights come on. I watered every 2 days but I usually split 1 gallon of water between these 5 3 gallon pots. I feel that I am underwatering if anything because I wasn't fully saturating the soil from top to bottom. Is this why my plants are so small? Yesterday I watered until I saw runoff and I noticed a lot of improvement in the plants droopiness this morning and more growth than usual as well.
 
DesertSativa

DesertSativa

Well-Known Member
db2 said:
The leaves were slightly less droopy but the stems were still looking weak and being weighted down by some of the bigger leaves when the lights come on. I watered every 2 days but I usually split 1 gallon of water between these 5 3 gallon pots. I feel that I am underwatering if anything because I wasn't fully saturating the soil from top to bottom. Is this why my plants are so small? Yesterday I watered until I saw runoff and I noticed a lot of improvement in the plants droopiness this morning and more growth than usual as well.
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When I water I have a lot of run off. My plants are in half-filled 5 gallon grow bags and I pour about a gallon of solution through each plant when I water. It ensures me the soil is thoroughly moist and rinses the used fertilizer salts away.
 
Uncle Ben

Uncle Ben

Well-Known Member
db2 said:
The leaves were slightly less droopy but the stems were still looking weak and being weighted down by some of the bigger leaves when the lights come on. I watered every 2 days but I usually split 1 gallon of water between these 5 3 gallon pots. I feel that I am underwatering if anything because I wasn't fully saturating the soil from top to bottom. Is this why my plants are so small? Yesterday I watered until I saw runoff and I noticed a lot of improvement in the plants droopiness this morning and more growth than usual as well.
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Stunted plants are usually a result of not enough water and N.
 
D

db2

Active Member
Uncle Ben said:
Stunted plants are usually a result of not enough water and N.
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Today the plants started off with a lot of life (the leaves were green and stems were firm). Unfortunately throughout the day the leaves get a little droopy. Is this normal? This is all starting to confuse me lol...
 
N

NitroHydro

Member
I have know idea what is wrong with my plants, well only two have some signs of a problem.

White Widow strain I have them on a 18/6 light cycle using CFL durning the morning and evening but durning the day I put them under a southfacing window. The problem showed up after I flushed the soil to get rid of salts. My ph is 6.6 and I water with tap water that has been out for 24 hours. The only firtlizer I have mix was 20-20-20. The instructions says to mix 5 ml with 1 liter of water. I did 2.5 ml in 1.5 liter of water. So it can't be nut burn.
Pic_A.jpg
This is the pic of the marble pigment.
Pic_B.jpg
This pic is of the leaf twisting/curling.
 
P

Purple people eater

Member
Hi i have twemty ounce cups soil 1 23watt cfl and a 18inch 15 watt 6500k light miricle grow garden soil now my bottom leaves are white with stems turning black just the bottom leaves so far anyway have picture on otjer thread called plants growing slow and leaves v shaped twisting and curling but there soo small too over a month old please help
 
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