CHECK OUT MY LEAVES

[ghuser113]

here is a problem i keep having about the same time every run 35-40 days into flower here are some pics and i will fill the hydro q list out





How long has this problem been going on? 2wks
Are you growing in a PVC grow tent? no
What system are you running? areo flow 18 site GH
What STRAIN are you growing? chrystle nirvana
What was the establishing technique? clone
What is the age of your plants? 35-40 days flower
How long have they been in there mixture they are in now? 1 or 2 weeks
How tall are the plants? 1ft 2 ft
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? FLOWER
What Technique are you using? not sure?
What substrate/medium are you using?(Hydroton, RockWool etc.) Hydroton
What is the Water temperature? 70-76
What color are your roots? White? Brown? Are your roots slimy?no slime white
What Nutrient's are you using?(If growing soiless) Gh 3part and flora plus koolbloom and cal/mag
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*micro75ml gro 0ml bloom 110ml cal/mag25ml koolbloom30ml in 10gals on RO Ro comes out at 10ppm
How often are you feeding? (If using soiless)as soon as my ppm gets down to 400-500ppm
How often are you giving nutrients? (If using soiless)same as above
If flowering, when did you switch over to using Bloom nutrients?as soon as i saw pre bloom
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect) micro1st cal/mag 2nd bloom3rd then koolbloom and sometimes flora +
What is the TDS/EC/PPM you are using 950-990
What is the pH of the "Tank"?5.8-6.0
How often are you testing your pH/PPM/EC/TDS? yes
Are you sure your calibration is correct on your equipment?yes
When was your last watering? everyday
What is your water temps?70-78
When was your last feeding change? (ie. grow-bloom-micro-additional)4days ago doing a flush to c if it helps right now
How often do you clean your system: example: Flush out, water replace with clean water and nutrients? dont just do a change of nutes most of the time
What size bulb are you using?one 1000W hps and 1400w hps
How old is the bulbs you are using? about 4 months and 6months
What is the distance to the canopy? about 20-24ins
What is your RH Factor(Relative Humidity)?40-50%
What is the canopy temperature?70-80
What is the Day/Night Temp? (Include flucutaion range)75-80 in the day 65-70 at night
What is the current Air Flow? (cfm etc.) have a vortex 740 cooling both lights
Tell us about your ventilation, intake exhaust and when its running and not running ?vortex 740 cooling lights pulling out air and pulling outside air in at the same time passive air system
Is the fan blowing directly at plants?osalating
Is your water HARD or SOFT?soft
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
If using tap water, what is the ppm/EC/TDS of the water right out of the tap? Im using RO ppm is 10ppm out of the system
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives? 10ppm
Are you using water from a water softener?City water
Has plant been recently pruned, cloned off of or pinched..No
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest'sNo pest No chemicals

 

[Phillthy]

the first pic looks like a ph problem.
the second looks like a manganese issue.
the third looks like K def.

my guess is a ph issue or your getting locked out some how. have you tried flushing with plain water at all?

 

[paulo73]

Hydro is not my thing but by looking at the pictures i agree with Phillty.
Plain water for a couple of days and see how do they react.

 

[Guest 263194]

what is your tap water ppm? I would try RO/Tap water, 50/50.

 

[Cheddar Kid]

looks to me like you may have some hotspots that are reflecting on your leaves, if over or under nuted that makes the necrosis worse, but it dont look like anything to worry about, like those above say, flush it for a few days and dont remove the leaf just the dead bits. Still plents of sugars in them. It's absolutely minor. If it its on older leaves it'll get grown out. it looks more like older leaves slowly dying, the first picture is a burn of kind. Try not to get things mixed, parts that dont get light, parts that are dying off, nute burned parts, alot of the worry on here is what I call 'unexplained necrosis phenomena' yours isnt in the veins so I imagine it's an overload of sugars and starch and maybe the heat spot from a reflector has speeded the necrosis up. Cheese is the worst strain for this phenomena (real not BB) it does this alot but it never affects florescence.......

 

[Phillthy]

i see it on another uk skunk cut as well. exact same symptoms.