Need help!! Nute lock out??

[bgandgrow]

My first grow indoors and things have taken a turn for the worst. I think it may be an iron problem but Im not sure. ph is always around 5.8-6.4. New growth is highlighter yellow and starting to die. Any help would be much appreciated! Will post pics later tonight.

 

[FishmanK]

first issue most run into inside is air flow
oscillating fan is a minimum

besides pics details on grow medium and if pots/containers are new or used and humidity and temps right now etc...
Im an outdoor guy myself
some ways more work, some ways it's much less...
heh
Good Luck!

EDIT: Lighting too, how much how close for how long? Always like this or different lighting at some point etc

 

[bgandgrow]

I started them under an 8 bay and after a month in veg I got a 1000w HPS and have used that for around a week now. The light may have been to close but its sitting at 22in now. Have a decent size fan blowing on em. Temps are 70-75 with 38% humidity. New pots, promix hp, and ive used bioag cytoplus and bioag tm-7. Also its an open room...will have pics later!

 

[FishmanK]

an "8 bay" is like a "t5"?
sry not big indoor guy but doing more to make my own starts
if you jumped lights too fast its easilly shock from that and the new growth will be ok if they dont totally die
if this is what happened and Im understanding correctly,
in future maybe give them alot of space when changing to more intense light for at least 2 days (I use remay to shade/harden off to sunlight from artificial)

 

[FishmanK]

also if first indoor grow its easy to overwater and this is a bigger potential for root/damp problems indoors
let it definately dry out, not to droop but dry surface of pots as its clears up, between a good flush
helps to prevent fungus gnats as well to do this
if there is too much N you can flush it
too much P tho is a bummer, binds to soil
fresh soil used soil other?
nutrients added?

 

[bgandgrow]

Yeah fresh soil Promix Hp. Gave them cytoplus and tm-7 from bioag. I think i may have over done the cytoplus? Just gave them all a flush of phd water. First time I've had water come out the bottom So hopefully that helps clean the soil if that is the problem.

 

[bgandgrow]

Don't think it's too much P, haven't really fed them with P yet. Cytoplus is K only and I believe it's 7. Gonna let them dry out and transplant into bigger pots the roots look healthy...

 

[Scrappy-doo]

Ill take a shot in the dark since no pics (get pics up you will get much better answers).

Your problem might be the new light since that's the factor that changed recently. So it might have been too close before but now it's at 22"? Even 22" is too close especially since they were under a weaker light before. Light burn can turn foliage yellow like you describe. Also with such low humidity the plants aren't able to transpire naturally. Get a humidifier and bring your rh up to 75%, and bring your light up a foot so they can recover. As for temps you should be reading the canopy temps as well as the ambient room temps to get an accurate reading. Environment is everything bro.

Pics will tell if that's your issue or if it's a nutrient issue.

 

[FishmanK]

Odd, Im using promix too and had an issue I thought was from too much peroxide on some powdery signs and those are just getting past that

ProMix issue?

Unless root-bound, Id wait for a bit to make any changes, see how things go
I think my lighting was a factor, you probably think your lighting was a factor (since you mentioned it first, heh), seems Scrappy suspects this as well...

 

[bgandgrow]

 

[Lester Beans]

Your pH is way off. PH to 6.5 - 6.8 and feed them. Also what is your light cycle?

 

[bgandgrow]

24hr Light cycle

 

[marrdogg]

Your pH is way off. PH to 6.5 - 6.8 and feed them. Also what is your light cycle?

Im glad somebody stepped in to give some correct advice. Whats this about lights when op said in first post his ph was 5.8-6.4 and what hes feeding. I just skimmed real quick but is thete even a base nutrient used?
PEACE!

 

[bgandgrow]

Thanks everyone for the input, I'll raise my ph as suggested and feed them with a 4-4-4. Tiny brown spots started to appear on one of the plants. Think it's dead spots

 

[bgandgrow]

Anyone think I should switch to 18/6? Give em a little break instead of 24hr?

 

[ganjygav]

Them tiny brown spots are likely to be calcium deficiencies or the start of anyway. I suffered with it for quite a few grows. Turned out my problems were caused by ph also. I ph all my water and feeds now to 6.5ph which is optimum for soil and I ain't had any issues since.
I read cannabis don't need a dark period but I like I a sleep so I always veg 20/4 just to give them a rest.

 

[Scrappy-doo]

Im glad somebody stepped in to give some correct advice. Whats this about lights when op said in first post his ph was 5.8-6.4 and what hes feeding.

Yeah so you don't see a problem going from some weak light straight to a 1k sitting less than 22" above the canopy and @ 38% rh? Please. Read closer before you start throwing snark my way.

OP, you may have a ph issue as well but those tops look pretty dry and crispy. Droopy, yellow, canoed tops. Very obvious stress from the close light and low humidity. Plants need to adjust to high intensity lighting, it's called hardening off. Under low intensity leaves are delicate and cannot handle a sudden change to high intensity. The shift needs to be gradual so the leaves can toughen up and be able to handle an hid at that distance.

The droop and yellowing could be overwatering but doubtful from the looks of it. If the droopy leaves feel soft and delicate its that. If they feel like stiff thick crispy paper it's the light.

 

[bgandgrow]

I see your point with the lighting. Shouldn't have had it at 22' to start off with with such low humidity. I have raised the light a lot more and would a 20/4 light cycle relieve some stress?

 

[Scrappy-doo]

Yes it will give the plant resting time to repair but the more damaged crispy leaves will not recover. I'd pluck them for a faster turnaround. Raising the rh is important also. 70+ for vegetative growth especially under an hid light. Plant needs to transpire properly.

 

[marrdogg]

Yeah so you don't see a problem going from some weak light straight to a 1k sitting less than 22" above the canopy and @ 38% rh? Please. Read closer before you start throwing snark my way.

OP, you may have a ph issue as well but those tops look pretty dry and crispy. Droopy, yellow, canoed tops. Very obvious stress from the close light and low humidity. Plants need to adjust to high intensity lighting, it's called hardening off. Under low intensity leaves are delicate and cannot handle a sudden change to high intensity. The shift needs to be gradual so the leaves can toughen up and be able to handle an hid at that distance.

The droop and yellowing could be overwatering but doubtful from the looks of it. If the droopy leaves feel soft and delicate its that. If they feel like stiff thick crispy paper it's the light.

Yes I saw that but why wouldn't you also tell op about his nute program. And no I have had absolutely healthy plants thrown right under 1000w straight out the rooter! I veg under 1000w nanolux de's at this exact moment turned all the way the fuck up with no probs. If plants are healthy no thats not an issue if your temps are under control and hell 38% humidity in my situation it's pretty much like that now with no problems.

So with that being said if op would have followed your advice he would still be posting sick plants on this thread.
PEACE!