Tips curling downwards, and bottom leafs yellow/brown

hello everyone was wondering if i can get some help. 3rd week of veg in oraganic soil, foxfarm nutes, and ph is at 6.5. All my ladies have leaf tips that are curling down, and some of the bottom fan leafs have discoloring yellow with brown spots.
 

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I doubt its over watered i let them dry out pretty good before i feed; however a few days ago i had them under a 600 watt hps while i was at work and when i came home temps were at 100+ all my plants were droopy. I switched over to T5's for over a day now and i manage to keep temps between 75-82. They've been looking like this all day. Has the damage been done from the 100+ degrees?
 

dabupp

Active Member
I doubt its over watered i let them dry out pretty good before i feed; however a few days ago i had them under a 600 watt hps while i was at work and when i came home temps were at 100+ all my plants were droopy. I switched over to T5's for over a day now and i manage to keep temps between 75-82. They've been looking like this all day. Has the damage been done from the 100+ degrees?
Honestly hard to tell. I constantly battle heat issues due to my small grow space, and am constantly burning my plants and having them run into lights. My grow area is ~85 all the time, so its pretty hot. I have had some leaves from temp burn 1/2 recover, and others just give up and fall off. Its really what the plant decides to do. However, you are doing the right thing. Just baby them and monitor the situation. If you see more leaves start to have issues that weren't initially effected by the heat, its another culprit. If you just lose those leaves and everything else remains fine, than the plant just cut its losses and moves on. Goodluck.
 
Thanks a lot dabupp for the quick replies. I don't mind a few leaves falling off, but i wouldn't want the whole crop to go bad because of the previous temp problems. Would love more help so i can eventually pinpoint what are bothering these babies.
 

dabupp

Active Member
Thanks a lot dabupp for the quick replies. I don't mind a few leaves falling off, but i wouldn't want the whole crop to go bad because of the previous temp problems. Would love more help so i can eventually pinpoint what are bothering these babies.
Yea just keep your thread updated and I'll swing around every once in a while. Though, there are much more knowledgeable people here than myself! If you were going to totally lose her due to the heat issues, you would have known by now. Its pretty hard to do it, you would have to burn it so badly that the plant gave up. 0.o Your girls is just big enough for nutes, but ensure they are very diluted. Trust me, burning your plant is the last thing you want to do. I still am feeling the repercussions of having burned my girl over 2 weeks ago. Better to have them go into a deficiency then burn em.
 
Anyone else? Im looking around on the forum and i think i may have root rot from looking at pictures. Is it possible for me to pull one of them out and check the roots without hurting it?
 

Kingrow1

Well-Known Member
Calcium is the third major nutrient after Nitrogen and Phosphorous then potassium is the fourth, NPK just makes you forget about calcium try a N,P,Ca,K instead of NPK when you think about nutrients. Peace
 

stuccodude

Active Member
hey kingrow1 whats the problem with the leaves to the left on your pic. dont wanna hijack somones thread mine is spot on the ones to the right and a couple to the left.
 
here is another pic of the tips curling. It really looks like a claw majority of the leaves have this, but its a bit hard to see in the pics (sorry). Should i let the soil dry up a bit and see what happens? Then should i lower my nutes or do a flush?
 

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Kingrow1

Well-Known Member
Hey dude sorry i was major stoned when i first seen this thread, like baked. The other guy was right with the temps being too hig, possibly the ferts as well but the top of the plant looks good and green, i just saw them bottom leaves and thought of cal/mag. Whats your water like, cant get fox farms over hear, dose it have calcium and magnesium in it, i think off hamd it dose but still i see a bit of cal/mag on lower leaves. Is that old or new damage, might have happened ages ago for all i know but worth checking and looking into. Peace
 

Kingrow1

Well-Known Member
hey kingrow1 whats the problem with the leaves to the left on your pic. dont wanna hijack somones thread mine is spot on the ones to the right and a couple to the left.
No problems, i dint get much right on his plant except the bottom leaves look a bit cal/mag deficient, should work out why, sometimes they need more ferts or sometimes its too little in the water and get a cal/mag supplement. Certainly with reverse osmosis water in soil you will need a seperate cal/mag supplement as ro water has none in. Good tap water has about 150 to 200 ppm and threequaters of this will more than likely be calcium and magnesium and stop most cal/mag problems. Never hurts to check your water and ferts to make sure you have an adequate supply of cal/mag for your loving plants.

So yer i seen a lot of deficiency charts and i hate everysingle one, they just confuse me and the new grower and its never that simple, all weed deficiency charts should be burnt, they are crap, cause more problems than solve, that being said when you have worked through every deficiency under the sun you will finally be able to understand them but by that time you wont need them anymore, crappest crappiest crap crap crap things deficiency charts.

And then i found this little beauty on cal/mag, this chart actually works and makes it easy for a new grower to spot cal/mag on plants. Damn they look exactly like calcium and magnesium deficiency, even i was unsure at diagnosing it on my plants till i used this! Damn it good, never could find out who made it or where it comes from, i often hoped there would be a series of them for every deficiency and problem but alas after many months searching i hit a dead end. This is like a snipet of the holy grail, a peice of eutopia where evry deficiency is easy to identify, a place where growers dont need to guess they just look at these charts! Really hacks me off that i only got the cal/mag part and the rest is lost for eternity. There is faint writting on the front, looks like OT1 or OTL, could this be a member called oldtimer or someone else, maybe the great marijuana god droped this down from the great ganga heavens above and human kind stumbled upon it! I dont know and neither dose anyone else, it is officially the eight wonder of the world according to me so stare at it carefully, once you see the secret truth within your plants will never look the same, some say it is like looking at the great marijuana god himself, staring deep into the wisdom held in his eyes.

Anyway thats a Calcium Deficiency on the right and a Magnesium deficiency on the left, wana talk about it! Peace
 
Hey thanks for all the great feedback. However i fed them yesterday morning and the pots are still very heavy. If anything i think i might have over-fed them. My tap ph is at 7 i get it down to about 6.2 with nutes and ph down. So you think the tops are looking better and that the claws are just from a previous heat issue?
 
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