interveinal schlerosis, brown spots, yellowing......help me out

[Desert Hydro]

i originally thought it was a cal mag issue but now im not so sure. gonna bump up my ferts a bit and just began adding calmag about a week ago. any clue as to what it is? please help me out.

house and garden cocos with all the additives. ph is 5.8 and steady. blumat drippers. 2 phenos are fine just a little light in color, this one is straight DEFICEINT just cant pinpoint what.

 

[Desert Hydro]

How long has this problem been going on? 3 weeks
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents) new safe tent, 10x10
What system are you running? coco on drippers, house and garden
What STRAIN are you growing? killingfields from 5annie's
What was the establishing technique? clones taken from my mother(mother had same issue but not as bad)
What is the age of your plants? approx 5 weeks from roothed clone, 2nd week 12/12
How long have they been in there mixture they are in now?(coco,soiless etc..) from the get go
How tall are the plants? 3 ft
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? 2nd week 12/12
What Technique are you using? blumats
What substrate/medium are you using? coco
What is the Water temperature? 65
What color are your roots? White and beatiful
What Nutrient's are you using? h and g cocos
How much of each nutrient are you using with how much water? 8.5 ml gal
How often are you feeding? blumats constant drip
How often are you giving nutrients? always
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? per instructions
What is the TDS/EC/PPM you are using about 1200ppm with all additives
What is the pH "5.8
How often are you testing your ph? daily
Are you sure your calibration is correct on your equipment? every week or two
When was your last watering?constant drip
What is your water temps?65
When was your last feeding change? last night
How often do you clean your system: every couple weeks
What size bulb are you using? 2 600s
How old is the bulbs you are using? new
What is the distance to the canopy? 2.5 ft
What is your RH Factor(Relative Humidity)? 30
What is the canopy temperature? 80
What is the Day/Night Temp? 75-80
What is the current Air Flow? 600cfm
Tell us about your ventilation, intake exhaust and when its running and not running ? always on. pulled through filter/lights then out the window
Is the fan blowing directly at plants? above canopy
Is your water HARD or SOFT? RO
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? RO
If using tap water, what is the ppm/EC/TDS of the water right out of the tap? NA
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?
Are you using water from a water softener?
Has plant been recently pruned, cloned off of or pinched. no
Have any pest chemicals been used? If so, What and When? diatomaceous earth after the problem occured for gnats
Are plant's infected with pest's,, gnats

 

[Mr. Greengenes]

Hard to say exactly without seeing the size of the containers compared to the plants, but it looks more like a watering problem.

 

[Mr. Greengenes]

Ah, now with the extra info, I'm guessing overwatering. Constant drip seems to be a borderline thing. Some plants can tolerate it, but that don't make it great. BTW, I still don't see the size of the containers mentioned. Is it just my old eyes, or is that very important question really not on that list????

 

[Desert Hydro]

3 gal. im only having trouble with this one pheno. they are not overwatered. blumats only feed as the plants need.

 

[Desert Hydro]

they went from 1 gal to 3 gal on day one of 12/12

 

[Desert Hydro]

gotta keep bumpin til i find out

 

[CannabisFox]

When you say the ph is steady 5.8 what exactly is the range of your ph? And how often do you calibrate it?

 

[MynameStitch]

can you post a few more pictures without the HPS light on? The orange is hiding and I can't see the pics too well, the coloration
of the plant and all....

 

[majortom9]

Looks like high temps and a lack of fresh air, or very little to no air movement. I have a reveg and a clone taken from her and they have the exact same symptoms. My ph is around 6.2. to 6.4 , in soil and have only fed one time with 1/3 strength mix. Will try to post a pic a little later.

 

[Desert Hydro]

once i set my Ph there is little to no swing. but if were to say it would be more like 5.7-6.1
i will check the calibration of my meter but i dont think its that. i have three phenotypes of the same strain and this is the only one pheno affected.

 

[shmalphy]

Your plants have Multiple Schlerosis? :shocked:

Methinks it's interveinal "chlorosis"

http://en.wikipedia.org/wiki/Chlorosis

Are you keeping pots on cold floors? I think that will make them look like that

 

[SeaMaiden]

I suggest giving a foliar feed of MgSO4 (Epsom salt) at a rate of 1/4tsp/gal clean water. Don't worry about pHing, but do worry about using something as a sticker/spreader, a drop or few of dish soap will do the trick.

The purpose of this action is twofold. First, you'll figure out very quickly if Mg is involved because the plants will green up if it's deficient. Second, if the necrotic areas stop progression then you'll have a better idea of how to dose calcium. Of course, that suggests that you need a separate calcium supplement, but I personally have found that it's easier and better to feed coir this way.

The interveinal chlorosis will, or can be, reversed. The necrotic areas cannot, you can only stop the progression. I do suggest getting the relative humidity up, closer to 50%-70%, but that's not the cause of your problems.