What problem is this?! Help Please...

[simedru24]

Please help diagnose the problem with my ladies!
This seems like a serious problem... any help would be great. The only problem I can guess is that it might be root bound.. if so, suggestions on fixes would be great. I have a 3 bucket ebb and flow system.

How long has this problem been going on? - Less than a week.
Are you growing in a PVC grow tent? - yes. a no name 4x4x7' tent
What system are you running? - Ebb Flow
What STRAIN are you growing? - Platinum Kush
What was the establishing technique?- Clone
What is the age of your plants? - 7 weeks
How long have they been in there mixture they are in now? - Sure To Grow medium for entire life.
How tall are the plants? - 2 feet tall
What PHASE are the plants in? - Flower (for less than a week)
What Technique are you using? - n/a
What substrate/medium are you using? - STG Sure To Grow
What is the Water temperature?
What color are your roots? - cant really see them, but they are growing out of the holes in the bottom bucket. Seems white.
How much of each nutrient are you using with how much water? - Im using Sensi Grow by Advanced Nutrients. 6 tablespoons of each part a and part b.
How often are you feeding? - I top off the water with nute mix every week.
How often are you giving nutrients? - 1/wk
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? - Silica grow, part a, part b, organic compost
What is the TDS/EC/PPM you are using? - 900ppm
What is the pH of the "Tank"? - 6.5
Are you sure your calibration is correct on your equiptment?
When was your last watering? - 2 days ago
What is your water temps? - n/a
When was your last feeding change? (ie. grow-bloom-micro-additional)
How often do you clean your system: example: Flush out water replace with clean water and nutrients? - every month
What size bulb are you using? - 600w hortilux
What is the distance to the canopy? 2 feet
What is your RH Factor(Relative Humidity)?
What is the canopy temperature? - n/a
What is the Day/Night Temp? (Include flucutaion range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants? - almost, but not quite
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis and tap
Are you using water from a water softener? - no
Has plant been recently pruned, cloned off of or pinched - 2 weeks ago
Have any pest chemicals been used? - 1600x pyrethrum and Floromite
Are plant's infected with pest's - I just sprayed with Floromite 2 days ago, I hope not anymore...




This last pic is of the bottom leaves of the same plant... I dont know if this is another problem or if its consistent with the discoloration on the top...

 

[ubet28]

ph is off. looks like your spray was hot.

 

[simedru24]

ubet,

Thanks for the response. And correct me if I'm wrong but isn't 6.5 ok for ph?
Also, what do you mean by "spray is hot?"

 

[theHIGHlander]

the first 2 pics looks like you plants have heat stress/burnt (to close to the light)..
dont have you fan blowing right ontop of the plants...eg. have it faceing the wall .the rush of air hitting the wall will spread the around the room alot better

bottom pic ,,,get some airflow about there and tidy up the bottom of the plants


keep it green
highlander

 

[LlamaSchool]

The first two pictures indicate one thing only - LIGHT BLEACHING. This is what it is, without a doubt. No big deal but raise your lights or tie the bleached, higher parts of the canopy down.

 

[ubet28]

ubet,

Thanks for the response. And correct me if I'm wrong but isn't 6.5 ok for ph?
Also, what do you mean by "spray is hot?"

6.5 is getting high i would say you have quit a bit of drift going on. you should start out around 5.8 and re adjust around 6.5. I agree with the other two on light bleaching its just that you stated you were using 600 watts and that its 2 feet from the canopy this should be high enough. Is the light in aircooled hood or open? I also think that the spray used had some effect on them.

 

[simedru24]

Thanks for the response guys. IC Mag is the only place that get me anywhere these days. The other sites are... eh.

Anyways, the 600w light actually has no glass for it. I know... I know... I will get a piece cut ASAP. It is aircooled with a squirrel fan.

However, I was also thinking that 2 feet was enough space apart to avoid light bleaching. Do you think that the glass cover will reduce this? Is the bleaching occurring from the light itself or from the heat emitted from it?

 

[LlamaSchool]

You're air cooling without glass? hm...

Glass won't prevent light-bleaching. Light-bleaching is caused mainly by light, not heat. 2 feet really should be OK but I would at least tie the bleached cola down a bit lower and see if the rest of the canopy does any better at a 2 foot distance from the light.

 

[maryj315]

How long have you been using that tent?If that tent is new and you just put those in their than off-gassing is most likely your problem and your ph is out of range for that type of set up

Mj

 

[simedru24]

Off gassing? Hm..Ive never heard of that...
What would be an ideal ph to work with off gassing?

 

[theHIGHlander]

you better pray its not or you might aswell bin them.... (search off gasing/tent ect etc)

haveing your fan blowing right ontop of you ladys will give heatstrees aswell,,,,you plants might be far anuff away from the light but a constent hot wind blowing down will cause this to...

keep it green
highlander

 

[maryj315]

Off gassing? Hm..Ive never heard of that...
What would be an ideal ph to work with off gassing?

Your ph for a ebb and flow set up is not right

If that tent is brand new and those are the first plants you put in their within the last few days i would almost guarantee it is off-gassing from the tents pvc lining

Now if you started those plants in that tent and your problems are recent then off gassing is not your problem you need to look elsewhere

If off-gassing is the issue throw the tent away or at least get it completely out of the grow room their is no cure

Mj

 

[simedru24]

Yea the plants have been there for 6 weeks and this just started happening.. So I dont think its off gassing..

I will check on the fans and ph though.

Thanks for the input everyone.

 

[blowwhole]

Thanks for the response guys. IC Mag is the only place that get me anywhere these days. The other sites are... eh.

Thats why I like IC Mag, Lots of Great info and no children. LOL