Advice needed please .. with pics

in short (if I can keep it short ?)

2 Femi voilator kush ..

in dirth (light mix bio)

useing floraduo A+B and micro (and have ripen ready for later)

water evry 2-4 day when pots feel light and top soil is dry ..

7 weeks old from seed .. 5th day of flowering ..

fist 6 weeks under a 6 bulb T5HO fixture ..

last 1½ week under a 600W HPS

3th day of 12/12 one plant begon to show signs of flowering (white hairs)


but I also notice they boath had tip burns .. just a bit .. like ½ - 1 mm
some lightgreenish and some brown ..

so I did of course look it up in one of them "find your plant problems" thingy and read a lot of threads ..

fist I was thinking maybe heat burn as I did have a bit high temps in the start 84F (now I runn the HPS at night.. so now its more like 80F)

but its only the very tip of the leaves and rest look healthy and edges is normal .. and it is on most leaves top aswell as bottom leaves ..

then I was thinking maybe to much Nutriens ...been on the low side most of the growth as I was scared to burn em but lately I have got up to full ... and I fist notice the small burns in 12/12 so maybe Bc. of that ?

not sure .. why I ask for help ..

a few Pics .. maybe hard to see as they are small ..



any suggestions ? I know its hard to spot .. it is also only ½ a millimeter at most leaves tips and half is light green and half is brow ..


also .. when I was in ther to take some pictures I notice that one plant had yellow leaves in the bottom (saw one going light green yesterday but was thinking it might be normal as I startet flowering) but now I have like 4 big fan leaves completly yellow/brown ?


is this normal for flowering ?




think I read it somewher that it is normal in flowering ? but so early in flowering ?

also read somewher that it is a sign that the plant need more food/nutriens ? but what about the leave burns then ??


Im sorry but Im a littel confused .. may I also add that this is my fist indoor grow so in a nub


may I also add that one plant have been looking more healthy from day one and have been grown fastest ..

that is the one who have the yellow/brow/dead leaves .. other have non ..

I also think I read somewher that you schouldnt remove em ? as it is food for the plants ?


any help is most welcome .. and please ask if you need more info or pictures ..

and sorry for my rusty english and bad gramma


p.s.
a few pics of the plants



been looking healthy most of the grow .. tho had a littel Ca/Mg and rootbound in Veg .. replantet in 7 gallon pots and they lookd fine in a few days and grew fast .. been FIM one (the fast one) and LST the other one ..

here is a few pics from 4-5 days ago .. day one of 12/12 .. looking great .. no burns and no yellow/brown leaves ..
been in the room with the HPS for allmost a week on 18/6 (also why I dont belive it is heat burns)




Im realy lost here so hope somebody can help me out .. now I begin to think they might need some more of some kind of nutriens or sumthing .. wouldnt like to do sumthing to em before I had some advice .. dont like to make it even wors if I go in the wrong direction ..

What is your PH at?
Also it is hard to tell from the pictures but it looks like the only leaves dieing are the ones that get very little light, if so this happens naturally during the plants growth.

Ph of water is 6,5 ... runn off is 6 - 6,5

last time I made a dirt tests it was spot on ..between 6 and 7 (around 6,3-6,8 I belive)

and yea they get close to non light now I think about it .. Lol .. nub grower

did`t like/know how to lolipop em to much .. did only remove leaves that was tutching the dirt or close and some of the bottom bud sides .. but maybe I was`t "hard" enough ? schould I remove em now ?

so yea as it is a kush plant with big leaves and they are bushy do to LST/FIM the bottom growth dont get much light I guess .. even tho I manages to keep the HPS around 20 inchs away .. grew up to 18" in two days

I recommend running anything 600 Watts or less 6-8 inches away from the plant canopy in a well ventilated room.
You definitely should remove any leaves that get the point of the ones you showed in the pics above.
Start about 8 inches away then put your hand at the top of your canopy if you can comfortably keep your hand there your likely to be safe.

600W HPS




I keep it around 20 inches away as it is not a cooltube Im affraid .. plants grew up to 18 inches so I move em down even tho tmps is like the same .. 82F is around wher I can keep it .. a bit high but schould still be ok ..


got a 100mm canal fan with a carbon filter going ..




a littel bit on the small side I know .. also why I runn it at night to keep temps down ..
tho it can still remove my air in my room (witch is 7x3 feet and 8 in hight) with in 3 minuts .. I belive more like 5 with the filter on .. but it still get lots of fresh air .. intake comes directly from out side and a got a tower fans lieing down at the intake to help pull more fresh air in and spred it around the room ...

and of course the big table fan blowing at the HPS at a angle that blow the air pass it and up at the filter/ventilation ..
with out that I would have temps close to 88F

If you have good airflow you could get that light a lot closer and easier add 30% or more to your yield. I don't use a cooltube and right now my plants are closer to 3inches away with no burns and no c02. My area is 4x5 W and roughly 6ft tall.

Like jvo said, the lower leaves are gonna die due to lack of light. Continue bending your branches to get the most out of your light and you will get a good harvest. The plants look good though. I always flush with 3-5gallons of water in my 5 gallon buckets at week 2-3 of flowering to get rid of excess salt buildup. After flushing, just do a light fertilizing treatment and continue on with your feeding/watering program up until the last 10-14 days before harvest then flush again.

If you have a 600watt, you need to be 14-18" on open air fixtures.....can get a little closer if its air cooled

jvo said:

If you have good airflow you could get that light a lot closer and easier add 30% or more to your yield. I don't use a cooltube and right now my plants are closer to 3inches away with no burns and no c02. My area is 4x5 W and roughly 6ft tall.

Click to expand...

What kind of light through? No way it could be that close to plant tops if it was a 600watt HPS light....my 400watt HPS lights literally burn my hand if it is within 6 inches...I run my 400watt lights in air cooled reflectors and keep them about 10inches from the tops, but a few years ago i only had open air fixtures and had to keep them about 16" or so from the tops. Also obviously has a whole lot to do with ambient air temperature

yea I cant keep it that close ..

either it is very bad/nubish advice .. or he is useing a cool tube or sumthing ?

I can keep it up around 18-20 inches away .. thats like 13K/10,5K Lumens at the top .. schould be enough .. I know 5 inches down at lower grow it is more like 7K lumen aso. but schould still be ok ..

I did start on 25 inches to let em get use to it .. and I might move em up or let em grow up a bit .. but I think 16-18" would be max ..
and yea air flow and temps is importent .. but ther is no way Im moveing my 600W HPS down to 3 inches away .. not even 10 .. 15 I might try .. but lets see .. now I need to wory about the leave tip burns ? and see if I can get a good hold on my nutriens .. can deside if Im low on sumthing or maybe a bit high ?



the leaves I have that is yellow/brow is underneet the grow and dont get much light if any .. so its logic

now I just dont know if I scould remove them or let em die off ? and if I schould remove more of the undergrow ?

I run 550 CFM of just duct fans and have 2 oscillating fans in my setup. It's just a Cooper 600Watt Magnetic, it is not a cool tube. I measured though and my plant is more like 4 1/2 maybe 5 inches from the light.

ok well 550 cfm is a lot I runn like a 1/5 of that .. I know Im low on ventilation .. why I runn it at night and use a air intake from out side to keep the temps under controle ..will buy a bigger vent. next month .. but after 15 inches it just feel way to hot for my hands .. I dont belive air flow woud fix that ..

also most places I read about lighting .. HPS and distance .. tells me to keep it 18" inches away for optimal light .. dunno ?


but we are kind a off topic here

I now know why my bottom leaves and under grow is turning yellow .. to crovded and nearly no light comming down ther ..
but what about my leave tip burns ?

anybody abe to help me out here ?
when I read them guides about pant problems they tell me it could be one of either thing .. to much water .. to littel water .. to much nutriense .. or missing sumthing .. or light burn or heat .. or wind or or or or or ... arrrr !!! its not like it help me much .. I know it can be many things .. but I need somebody with some grow experiance who maybe have some experiance on this and know what can be done to find out what it is and to fix it in the end or atlest know how to deal with it on my next grow ..

Ooh yea and thanks a lot for all the input so fare ..

Ey buddy. I don't even think that's the very VERY beginning stages of nute burn. I think the pots got just a little bit to dry before one of the last waterings in the last week or so, am I right? That just happened to some of my lower fan leaves...pots got a little too dry, the bottom leaves get deprived of water first...then they yellow up and start to get crunchy and fall off within a week or two. It could also explain the tips of the good leaves yellowing a little.

But yea, they'll also yellow up and sometimes die like that from not getting light. But is it happening on your LST and your FIM plant?

hhmmmm maybe ?

so under watering .. could actualy be spot on .. since Im sure I did`t over water and pots did feel light one morning a week or so ago ..
a bit surprised as Im not use to water so much .. but as they are bigger and under a HPS and have high heat it could easily be a good explanation ?

is it normal for leave tips to get lightgreen and then brow if it is under watering ?

and yea look at my fist pics in this thread .. a few (4 or so) bottom leaves on the FIM plant did go completly yellow/brow and dry .. but they did`t get much/any light either .. like a million leaves between them and the light

As far as the light not getting down there, there's an easy way to figure out if that's why the leaves turned yellow and died....are the leaves directly above the leaves that turned yellow healthy? Aside from the little bit of brown you're seeing on the tips? If the leaves right above those are healthy, it's probably not because they didn't get enough light. Plust I grow mine to 3' sometimes and only lollipop up 6 inches, and my bottom leaves don't turn yellow and die off from not getting light. They do however turn yellow and die sometimes from spider mite damage, and from forgetting to water when the pots are already a little dry.

So I don't mean it's from underwatering as in you haven't been watering enough, I just mean that the pots were probably dry enough to get water, and then went an extra day or so without it to where the bottom leaves start to droop down a little. You might not notice it and just water anyways, as it takes another half of the day depending on if the plant is root bound or not.

So if you water a day late, or even half a day late, sometimes those bottom fan leaves just don't recover, and then add to it that they aren't getting sunlight, and you have a cocktail for dead leaves.

ok .. well I removed them now .. and did some more lolipoping aswell ..

and Im 99,9% sure your tight .. about the water "shortes" as its only my FIM plants (the fast growing one) that had yellow leaves ..
and that is also the one who use most water .. need water like evry seccon day or so .. other one only need water like evry 4th day ..

the FIM plant its bigger ...grow faster and have been in the big pot for longer time .. and the runn off do go faster trough then when I water the other plant ..

There we go.

See, mine just did the same thing, except probably a little worse than yours, as I went a whole day too long without watering. But the top of my canopy still looks awesome. I still have to take of some yellow leaves and some crispies...

yea boath pics look exatly like mine ..

so nothing to worry about I guess... just normal signs the plant show you ..
I guess it use its water from them lower fan leaves ? before the plant acctualy drops and look "tired" allways thort that was the fist sign ?
guess I did`t notice yellow leaves and tip burns back then ..

Ooh well all is good ...and I also got a few things to day



kitchen ventilation (100mm and 100M3/hr) cost me like 15$ ..



and some tubeing .. cost me more then the ventilation

so now I can make a prober fresh air intake ..



allready made a intake "box" you know .. behind it ther is a 20x2 inches opening to the out side .. cleard it from all the filters and stuff and did only fit some stainless stell netting (200 my) hope that is enough to keep bugs and stuff out ?

also made a box around my intake to my grow room ..

will connect it with the tubeing/ventilation so it pull fresh air in to my 600W HPS

will make a small opening more in the intake box near the floor ... so I can controle temps. and air presure ..

it will be made so I can open or close it to maintain just a slightly negativ presure in the room and just enough fresh/cold air to maintain correct temps ..hope this make my temps drop a few degress .. from 82-84 to 78 would be perfect ?

Yea 78 is about perfect.

I think the reason the bottom leaves dry out first is because their roots are closer to the root ball, and the top of the pot dries out first.

Man, you are really gadgeting out that tent now lol. In a couple months that shit is gonna look like a space ship