Whats happening to these plants?

A

Atticnoob

Active Member
Hi everyone, i have a small veg and grow room set up and things have been going fine but now i've got plants going down left right and centre. Plants of all stages are showing symptoms but mailny in veg. The plants affected have really thin stems at the base, as well as other things you can see in the pictures. They don't seem to use water at nearly the rate of other healthy plants. They have been reaching the state in the pic's then slowly dying over a few weeks.

Temps 20-30degrees (night/day)
Overkill with air flow
Using GH Advanced Nutes

I've got a bug problem also but i don't thing these are related. Will answer any other questions to help.
thanks..
 

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Atticnoob said:
Hi everyone, i have a small veg and grow room set up and things have been going fine but now i've got plants going down left right and centre. Plants of all stages are showing symptoms but mailny in veg. The plants affected have really thin stems at the base, as well as other things you can see in the pictures. They don't seem to use water at nearly the rate of other healthy plants. They have been reaching the state in the pic's then slowly dying over a few weeks.

Temps 20-30degrees (night/day)
Overkill with air flow
Using GH Advanced Nutes

I've got a bug problem also but i don't thing these are related. Will answer any other questions to help.
thanks..
Click to expand...

I havent grown soil but I know guys here are gonna need specifics like ph, ppm, lighting and distance from light, soil make-up things like that the more info you can give the better and more precise answer you'll get.
 
ph is 6.4
ppm, no idea probably high?
Under 400w Hps with a few CFL's for rotation, about 400mm away.
soil is 50/50 mix of potting mix (nute free) and perlite
watering 1-2 days depending on weight of pots.
drainage is non existant so i just water slow and remove any water from saucer after
 
dont wanna scare you but 1,3&7 look like offgassing whats ur grow room made out of? you havent got PVC everywhere have you?

whats ur feeding shed? full strength?

and whats the go with the CFLs 40cms away from the plant?
 
This is the worste set of plants i have ever seen.Get rid dude these will only bring more bad than good i think it is over fert and over watering.Also the ph must have not been taken correct.
 
i'd get rid of them if i was sure i could prevent it happening again. At the moment they are just test subjects. Thanks for input though will double check PH meter.
 
masterd said:
dont wanna scare you but 1,3&4 look like offgassing whats ur grow room made out of? you havent got PVC everywhere have you?

whats ur feeding shed? full strength?

and whats the go with the CFLs 40cms away from the plant?
Click to expand...


????????????
 
masterd said:
dont wanna scare you but 1,3&7 look like offgassing whats ur grow room made out of? you havent got PVC everywhere have you?

whats ur feeding shed? full strength?

and whats the go with the CFLs 40cms away from the plant?
Click to expand...

offgrassing? no pvc really, just a small room with insulation on the walls and duct everywhere?
 
have been on quater nutes since hitting grow stage and half nutes till now, when they were healthy was just about to start giving them full nutes. Off the top of my head the nutes are 10-7-7 or something similar with some seaweed based stuff in there also.
 
so how do I get N to them without watering? and if it is over watering can they recover and how long should i leave the soil dry before watering again?
 
re read it..... offgassing or outgassing is materials leaking toxic gas usually from heat....

when you water it make sure the pot is dry all the way to the bottom, water with nutes every second time, to check if its dry pick up the pot, when they are light they are dry

but after reading your OP it seems like something worse than a def... with the getting worse and dying off in a couple of weeks..... but im just paranoid ive been caught out by toxic things twice now... any pics of your grow room would help... you can also do a test with a bad plant take it outside for 2-3 days and they should get healthier... dont freak out and get all your plants out,this is just my opinion, just do a test and find out for yourself...
 
masterd said:
re read it..... offgassing or outgassing is materials leaking toxic gas usually from heat....

when you water it make sure the pot is dry all the way to the bottom, water with nutes every second time, to check if its dry pick up the pot, when they are light they are dry

but after reading your OP it seems like something worse than a def... with the getting worse and dying off in a couple of weeks..... but im just paranoid ive been caught out by toxic things twice now... any pics of your grow room would help... you can also do a test with a bad plant take it outside for 2-3 days and they should get healthier... dont freak out and get all your plants out,this is just my opinion, just do a test and find out for yourself...
Click to expand...


thanks heaps for this info :) will try a few things now and will take a couple of pic's of the whole room
 
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