is this light bleaching??

[p.l.u.r]

hi all..

had a little scare last night my light turned off and i noticed the top of the plant is going a light green/dark yellow. i have been using my 400w hps for the past 2 days straight and its been 8-10 inches away from the top of the plant..

apart from this the plant is very healthy, just wondered if everybody agrees its light burn/bleached.. if so how serious is bleached leaves, i dont want to go and mess up my main cola just because the light is too close.. or could it be a deficiancy?i dunno??

thanks guys.. really hope somebody knows the answers to this little problem im having..

 

[JM]

doesnt look like burn... but 8-10 inches from a 400 HID is close.... looks like nitogen.... hows your soil ph? last feeding?

actually see a little phosphorus / potassium magnesium deficiency in the leaf tips there too... eithr ph is swinging or it needs a little shot of food.

 

[p.l.u.r]

Thanks for your reply jm,

The plant is in dwc, ph holds reasonably steady at 6 it seemed to like it there, but I have swung lower and higher through the grow. I have kept my nutes fairly low, no higher than 1.3 upto week 4. I allways thought burnt tips means to much of something.. now I see where im going wrong..

im confused now.. So are you fairly certain its not light bleaching?

Iv moved the light up to 12+ inches, and bumped feed up to 1.4.. Would it be a good time for pk13/14??

here is my grow if it helps jm..

https://www.autoflower.org/f43/maxi-gom-hydro-cfl-grow-journal-5188-10.html

Thanks again mate, ill let you know tomorrow if theres any progress .

 

[JM]

I'm not familiar with pk... but I'd say the up to 1.4 ec should help... one of the more exp hydro guys could tell ya better...
12 inches is probabl safe with 400W HID.. I run mine closer sometimes but I have a shield and and cooled hood.... so actual TEMPS aren't too high...

check out this thread:
https://www.autoflower.org/f7/basic-deficiencies-list-11.html


ps - almost positive its not light bleaching...


you should really read through that... it'll really familiarize you with deficiencies and the like...



just checked your thread... dont be afraid to feed her... hydro and 36 days is coming into pretty high nute demand especially when your ph is on point... dont mean to contradict the guy in that thread, but you can bump like you were... sw you went 1.2 - 1.3 -1.4.... I think you're headed in the right direction... especially with that light intensity on it... 650 W HPS... feed em... see how they like 1.4.... if they take it head for 1.45....

hope this helps

 

[p.l.u.r]

Thanks jm, your positivity has reassured me. I just check plant as light is now off and leaves dont look no worst or better, so this is good.. The roots did look a bit dark but that could just be all the nutes n stim I put in today. I have been reading through that thread most days lol.. its very useful, just alot to learn and remember..

Ill put up a pic tomorrow, hopefully it will be a progressive one..

Thanks again jm.. Your knowledge is priceless to me..

Peace bro..

 

[p.l.u.r]

Seems that she was waiting to be fed..

I just checked her and she is looking alot more healthier today, leaves are still lighter green but look like they are actually working today(reaching for the light). Also looks like the amount of pistils has multiplied too.. Im gonna give it a day or so and bump it up again, I think...

Thanks jm, im definitely learning with this grow, hopefully the next one wont be quite so troublesome..

Peace..