3 week old wilting and black spots help asap!!!!

hey this is my 1st grow .. im growing the El Dorado strain from nirvana everything was going good until maybe 2 days ago my tallest of the 2 plants started wilting and now i see these black spots similar to burns but it maybe be some fungi i dont know.... i keep them in a dr80 growlab in my living room i have them on 24hr light and i dont zip up the tent i just have it open alll the time to check on them and let the ac hit them and what not ... please let me know your thoughts and reccomendations to fix this problem before its too late. temp 75 - 77 f rh% 50 - 60 ph 5.6 - 5.8

bring up you humidity spray them girls lights off

Time to transplant those cubes into whatever they're going in.

Wet

yeah going to transplant them in a dwc container this week...... u think is the humidity? i was reading that it might be a calcium or mg lock out so i just flushed them with r/o water ad just cal/mag at a ph of 5.8

trem just use tap water forget ro water

thats what i was using before,, but since i read it might be a cal mag issue i just wanted to feed it cal mag to see if it responds withoutht all the extras

Are u kidding?
It looks like Nute burn to me. Don't feed calmag lol. Water with plain water and then your next watering start with a grow nute like Growbig at 1/4 strength dose. Alternate with plain water and then feed again. I rarely use Calmag unless I see a Mag def. And a Mag problem looks nothing like that.

im using AN and the ppm last time i fed them was at 600ppm they are 3 weeks.... ill try it out and keep you posted

your ppm is 600. u dont often hit that even in veg. i normally hit 550 ish before nut burn in veg but your plants dont even have full roots they are clones, chill on the nuts man. and u will be good.

they are from seed...

and not 600 i meant to say 400 the calculator says it should be 800 but since i only use4 out of the 11 on the list of nutrients to use sensi A+b, voodo n b52 it only comes out to 400 with tap water

i use sensi grow A+B as well and silica blast and aqua shield. yea i normally dot hit over 550 tap water ppm is 120-130

your P H is too low your gonnae get lockout at 5.8 it should be 6.5 if you get that sorted the rest will fix itself imo

tremend00oo said:

yeah going to transplant them in a dwc container this week...... u think is the humidity? i was reading that it might be a calcium or mg lock out so i just flushed them with r/o water ad just cal/mag at a ph of 5.8

Click to expand...

jofey said:

your P H is too low your gonnae get lockout at 5.8 it should be 6.5 if you get that sorted the rest will fix itself imo

Click to expand...

OP said its gonna be DWC. the PH at 5.8 is fine. my question is when was the last time you calibrated your meter?

ME AND YOU HAVE THE SAME PROBLEM BUDDY. lol i just transplanted mine today. i think i was over watering mine. mine started as black spots then got darker then yellow then shrivelled up. heres how mine looks
View attachment 2186368
im subbed. hope to find answers for the both of us

Once they show roots, I keep water in the tray with an air stone until transplant.

i dont trust my meter its a hanna 98129 i have all the solutions so i check its measuring correct before i adjust ,,, i have a blue guardian that i havent opened up yet ... im going to though as soon as i transplant to keep track of the water real time...

hey wassup guys heres an update to what happened and what i did... i just figured out it was a deficiency couldve been iron or zinc i dont know so i made a simple aeroponics system with parts i had at home .. i used r/o water cal mag and nutrients .9 ec to be exact to fill up my res the temps stay between 73 n 79 i also hooked up the blue lab guardian meter to check on the ph wich stays at 5.6 5.8 .. in the beginning the ph was al over the place and i think some root rot was ging on cuz the res felt slimey or slick.. and the roots are a lil brown but then 2 weeks into the plant exploded here are the pics... im going to flush the res and clean it this week so .. so far so good