Sick plants, black leaves curlinng etc, overwater?

[PatSajak]

I cant' figure out what the problem is, I've got 5 plants I just switched to flowering about 2 weeks ago, 3 are looking great and budding nicely, 1 has been dieing and not budding, and the other one is on that same path, spreading these Black marks all over the leaves, and then they turn yellow and curl up and are cruncy/die and i have to pull them off.. It spreads from the bottom leaves and gets all the way to the top leaves, only the newest growths are green, but the 2nd to newest growths are starting to get those black marks as well.. most of them have black on the tips of the leaves, but not all..

I water roughly the same amounts eveyrdya to the plants, but figuring this may be overwatering (and still think this might be the case) I've been drying out them a little bit, and only watering the dieing ones a little bit.. But after just giving it a little bit, the worse plant was very unahppy and started to droop again.. So I skipped watering completely yesterday and it got pretty dried out, and today I gave it a little water + epsom salt and it doesn't seem to be drooping like hell like it usually does around this time, but still its not looking happy... so maybe indeed its OverWatering.. the leaves are like rotting away?

Just wanted to see what you guys think, at first I thought it was calc def or mag def, and i hooked them up with calc but it did not help, and today i put a a tsp. of epsom salt for magensium in a gallon and fed gave them a little bit.. maybe 18 ounces.. because they were extremely dry

I've been reading all the deficiency issues and I couldn't come across this black/brown marks spreading on the leaves.. Even the stem vein becomes discolored and brown..

is this because of overwatering? how can I improve their health the fastest, just keep them dried out? just wondering if this may be something else and if I shoudl flush

thanks in advance for all your opinions and help!

PatSajak Reviewed by PatSajak on 01-27-2007. Sick plants, black leaves curlinng etc, overwater? I cant' figure out what the problem is, I've got 5 plants I just switched to flowering about 2 weeks ago, 3 are looking great and budding nicely, 1 has been dieing and not budding, and the other one is on that same path, spreading these Black marks all over the leaves, and then they turn yellow and curl up and are cruncy/die and i have to pull them off.. It spreads from the bottom leaves and gets all the way to the top leaves, only the newest growths are green, but the 2nd to newest growths are Rating: 5

[Weedhound]

Are you growing in soil or hydro? Lighting and distance from plants? Regular nutes you use? Room temp? PH of your soil or hydro resevoir?

[PatSajak]

Are you growing in soil or hydro? Lighting and distance from plants? Regular nutes you use? Room temp? PH of your soil or hydro resevoir?

I'm using fox farms soil, 2x400 watt HPS that i keep between keep around 8-12", (the 2 dieing plants are not directly under the bulb and aren't burning) Room temp I keep between 70-78 degrees, drops to mid to high 60's with lights off. I use Tiger bloom once a week, (just started using it, and started with a light dosage) and I use BigBloom supplement every couple of days or every other day

use spring water 6.4 PH, not sure the PH of my soil, those cheap ph soil meters i got never worked properly for me

[Weedhound]

AHHHH SOIL!!! I'm terrified of soil and as far as nutes and that type of thing go for soil I'm a zero. There are definitely better minds out there working with soil than mine so I will leave it to them. All your other stuff sounds good to me. Good luck!

[PatSajak]

Haha okay thanks anyway.. Yeah i'm just not sure what the problem is, its so weird. If its not overwaterring then I don't know whats up. But I've been drying out the pots and its yet to improve much.. a little bit maybe

[Weedhound]

I am honestly thinking some sort of nute thing.....overwatering usually looks like...well...overwatering....droopy, wilty and soggy. Yours don't look like that. There are some excellent soil growers here and I'm sure they will be able to help you. Best of luck!!

[PatSajak]

thx man, still looking for some opinions as to if i should flush? or what defeciency or burn it might be, i've been through the defeciency/sick list and i can't figure out what might be the prob

[DonJuan]

Hey there

looks like the same issue as I have. None of these potheads bothered to reply to my post however. They Probably sick of looking at the same old sick plant queries. ha ha. I have no suggestions for you - good luck

[Cyclonite]

Thats a K (Likely) or Mn deficiency.....flush your plants then give them what they need, try a PH of around 6.2. Foliar sprays are great for correcting stuff like that real quick.

[JackdaWack]

dont u guys bother looking at other threads, there is no difference between plant problems in hydro or soil, may be different ways to correct it. But yeah it looks like like a lock out, and a good idea would be to flush the plants, a ph problem it could be since u dont know what it is, try seeing what the ph is of your run off. i would leech the soil and put back what ever u need.