Plant Porblems, Brown Spots On Leafs, Dying And Yellow Leafs PICS INCLUDED

First time grow. I about 2 months in veg.
Soil grow in approx 3 galon pots. Good Soild used. 1000w lights going about 7 feet from floor. PH always between 6-6.8. For last month been using ro water with ppm approx 30 with only water. Temps in room stay between 80-85 with 30-40 humid. Was doing lights on 24 hours and then switched to 16 hours about 3 weeks ago but had some proplem with lights going off so was back to 24 hours now back to 16 hours. Have been using flora nova one-plandt grow 7-4-10. Been using under 1 tsp per gallon for the past month. Before that I was using 1 tsp per 5 gallon. Every 4 waterings I have been using 1 tsp or less rhizotonic per 5 gallon of water. Been feeding with nuts 2 of 3 watering cycles and 3rd been using only water. Always with correct ph.

For that past 3 weeks my plants have looked like the pics. Dying leafs and spots. I have been using only water 2 of 3 waterings now and very little food for the 3 watering the past 2 weeks tring to fix the problem.

A friend said I might not be giving enough water. I have not been filling it up enough so the water sinks to the bottom of the pot.

For the past 2 waterings I have been using 3/4 of a gallon of water per plant. Wattering every 2 or 3 days. Tring to fix the problem.

My ventilation could be better. But I think I keep the door open enough for enough air circulation. But could be wrong. Sometimes I do not open the door for 2-3 days.

HELP PLEASE!!! I want to put them into flowering but want to fix the problem first.

slow on setting from the bottom up , id say low ppm , check soil runofff with tds meter and get back to us

projectinfo said:

slow on setting from the bottom up , id say low ppm , check soil runofff with tds meter and get back to us

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How do I check the soil runnoff with a tds meter?

I just checking the ph on 7 or 8 of them that looked bad with a soild tester. About half way down with the meter it was 6-7. Then at the very bottem they were between 5-6.

Im thinking that was because i used to not use enough water to get to the bottem of the bucket.

What can I do to fix that if it needs fixing?

Thanks!

please help

bump

feed them more

I have same problem right now but I'm in week 3 of flowering

pick up some fine dolomite lime or hydrated lime at lowes or home depot and add to top layer of soil. will help with extra mg and ca and also buffer your ph.

my experience and ur pics tell me that is a classic K deficiency coupled with mg, slowly working its way up. flush and immediately refeed. am guessing u havent flushed much, which can lead to high salt levels causing problems with K and Mg uptake.
but what do I know.

I flushed them decent a few days ago and now I just fed them a good amount of food! I am thinking I have been way under feeding them. I will let you know what happens in a few days! Thanks for the help!

i have the exact same problem i put up alot of post and got bits of info here and there and about 10hours of reading and smokeybandit22 sayin what iève been expecting for the last few days on post #7 thank you very much for posting this question my questions are answered all except how do i bring the ph of my soil up .80- 1.0 apprx

opps ph down .80 - 1.0

lajupe said:

opps ph down .80 - 1.0

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u can pick up some ph up and down at walmart or any aquarium place. if u must use vinegar-

MIKEJONES11 said:

I flushed them decent a few days ago and now I just fed them a good amount of food! I am thinking I have been way under feeding them. I will let you know what happens in a few days! Thanks for the help!

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agreed, but dont over do it and dont overwater. water, nute, water, nute, water, water, nute, water, water, nute

smokeybandit22 said:

agreed, but dont over do it and dont overwater. water, nute, water, nute, water, water, nute, water, water, nute

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My pots are approx 3 gallons. How much water should I put in each plant? Should I do enough so a little water drips out the bottom?

depends on how quickly your soil dires out-the faster the more water-but yes till a bit comes out the bottom should work.

Ok I have experience the same problem in the past and I tried eveything and I can tell you that you have to flush them real good with ph balanced water no nutes. The leaves that are severely damaged remove them as they will not recover, all they will do is block the light from reaching healthy foilage. Once you have flushed and the PH and PPM is balanced leave them until your next watering DONT FEED THEM RIGHT AFTER FLUSHING you want to give them time 3-4 days to recover and besides there will still be anough nutes within the foilage to keep them green for 3-4 days. Once your ready to water them again give them 50% nutes then 2-3 waterings then go back to full strenght. You should pick up some run off trays place them under your pails to catch the water from feeding, and yes makesure you feed them until it drips out the bottom otherwise you will be back where you started. Always PH your water and makesure the water is also around 20-22 degrees celcius, cold water will shock the roots and lock out nutes and to warm of water will kill off roots causing the plant to lock out nutes aswell. Hope this helps

Harleyrider7581 said:

Ok I have experience the same problem in the past and I tried eveything and I can tell you that you have to flush them real good with ph balanced water no nutes. The leaves that are severely damaged remove them as they will not recover, all they will do is block the light from reaching healthy foilage. Once you have flushed and the PH and PPM is balanced leave them until your next watering DONT FEED THEM RIGHT AFTER FLUSHING you want to give them time 3-4 days to recover and besides there will still be anough nutes within the foilage to keep them green for 3-4 days. Once your ready to water them again give them 50% nutes then 2-3 waterings then go back to full strenght. You should pick up some run off trays place them under your pails to catch the water from feeding, and yes makesure you feed them until it drips out the bottom otherwise you will be back where you started. Always PH your water and makesure the water is also around 20-22 degrees celcius, cold water will shock the roots and lock out nutes and to warm of water will kill off roots causing the plant to lock out nutes aswell. Hope this helps

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no offense, but that is some crappy advice, If your plant is deficient, and you flush without feeding right after, the symptoms will worsen. Obviously if the plants are deficient than they will not have enough within the foliage as you say. And there is no new foliage beneath those leaves that are affected if you looked at his pics. Leaves the leaves until they are dead. You are right however with your last sentence.

smokeybandit22 said:

no offense, but that is some crappy advice, If your plant is deficient, and you flush without feeding right after, the symptoms will worsen. Obviously if the plants are deficient than they will not have enough within the foliage as you say. And there is no new foliage beneath those leaves that are affected if you looked at his pics. Leaves the leaves until they are dead. You are right however with your last sentence.

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I am not offended at all I had the very same problem and I am telling this guy what worked for me and trust me I tried everything. Goodluck and hopefully you find a solution

Harleyrider7581 said:

I am not offended at all I had the very same problem and I am telling this guy what worked for me and trust me I tried everything. Goodluck and hopefully you find a solution

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I retract my original comment. your advice is good. Sorry to come off like that. The only thing I disagree with is the waiting. His plants are so light green in nature that flushing will drain pretty much everything out of the soil and than I think he will have real issues. I believe his plants are just hungry and the soil may be causing some lockouts.
Rereading his original post, he has switched the lights three times and I cant even tell what the feeding regime is. The first sentence say been giving just water at 30ppms last month. Thats just stupid if true. OP, you need to be more clear.

Mike, Harley's advice is good. Ur plants are hungry. Like Harley says, flush and follow his directions. The only thing I might change is instead of flushing with just water, flush with 1/4 strentgh as like binds to like and you will get more fert salts out of the soil this way. Than wait the couple of days. U need to get them on a good routine. you cant get away with what you did during their earlier veg lives-they are maturing. Leave the lights on 24/7. Flush with week nute solution and feed with 1/2 couple of days-at least 3-4. If your soil dries very fast, more and more salt build up occures-higher EC-you can run into troubles making whatever nutes are prsent unavilable. Would not run more than half strength at any one time.
normal water/feed regime should be something like-water, water, feed, water, water, feed, water, feed, water, water feed. need to have runoff out of bottom of soil. Pick up the hydrated lime or fine dolomite lime and add to the top layer.

+ rep to Harley

im havin the same problem, what ever ended up fixing yours in the end?

shit ur plants seem to have my same problem finally someone with pics that similiarly resemble my situation check out my thread here:
https://www.rollitup.org/marijuana-plant-problems/161953-continuos-increse-yellow-specs-leafs.html

someone please help me too, more details on my other thread above, thanks.