What is wrong with my plant? Yellowish peeling on bottom leaves working their way up.

[noobwidow]

http://i.imgur.com/HHDfa.jpg

It's a Purple Haze and she is sharing some space with 3 other plants: LSD, Strawberry Diesel and Vanilla Kush. All of these other plants do not have this issue. After seeing this, decided to feed all of them for the first time yesterday night at 1/4 strength some Fox Farms Big Bloom and Grow Big. They are all 21 days old and I figured it's time to feed all of them anyway. Woke up this morning to find the problem is a bit worse. This is only happening at the bottom of the plant but the top leaves seem like they might begin having this problem as well.
They are under 2 Magenta Kessil 40 watt LED's at about 10 inches height, 18 hours light and 6 darkness.
Temps are about 27C (80F), humidity at 44%. I germinated the seeds directly to soil (Sunshine Mix #4) in 2 gallon smart pots.

 

[noobwidow]

Anyone?

 

[SeaMaiden]

Perhaps if you upload the photo directly others might be more willing to offer help.

Your temps are a wee bit on the high side, especially in relation to the relative humidity. However, the plant doesn't appear to be terribly stressed by the vapor pressure deficit parameters.

At this point I see a couple of things, mostly pointing toward a likely N-, Mg- (more on this below), and perhaps a K-. More pix and pix of the whole plant would be much more helpful in determining what all may be at play here.

You didn't say at what pH you fed, nor at what pH you've been feeding/watering. If you've only just begun to feed in the Sunshine Mix, I'm going to say they're definitely straight up hungry. I think you said you just fed for the first time, they probably needed feeding and the problems may progress before they get better.

I would stick to just the Big Bloom for now. It's a product I like to use and it's pretty easy on most plants. I would give a foliar feed of Epsom salt at 1/4tsp/gal clean water (pH it to below 7 if you can), and include a surfactant with it, a drop or three of non-antimicrobial dish soap works well here. Within a few days, IF it's a Mg-, the interveinal chlorosis should begin to green back up. If not, then you know what it's not. I haven't worked with the Sunshine Mix, so if it doesn't have a source of Ca and your water isn't supplying it, you need to begin feeding it from the start as Ca is immobile and must be laid down in plant tissues early.

Process of elimination here, yeah? And remember, keep it simple when feeding and watering.

 

[dr.bomkfist]

Most probably ph is too low.

 

[noobwidow]

Sorry, I thought the link I provided worked. Here's an uploaded pic.

 

[slshemup]

personally never seen or heard any great reveiws using leds though thats your choice.
i would go with a quality brand complete balanced liquid organic food if using organics and feed as per instructions on container.canna bio certified organic foods work great and easy to use great for newbs and progrowers.also make sure your feed mixed is in a safe ph range for soil ph 6.5 to ph 7.

 

[Aksala]

I use LED's in veg and they kick the shit outta flouro's and are on par with MH.

Never flowered with em though.

 

[Hash Zeppelin]

this one is such a basic fix, did you even try to use the sick plant guide?

 

[noobwidow]

I'm glad it's such a basic fix for you but sometimes I can look up and down the guide all I want, I'm still gonna be stumped since I'm new to this whole thing. If you want to help then just tell me what you think it is so that I can learn and never ask this question again. I would appreciate it very much.

Thanks.

 

[Ziggaro]

Zeppelin probably means mag then w/the interveinal chlorosis and upward curling starting with the bottom leaves. If it starts at the bottom that narrows down a lot of the problems you could have.
I am the same way, though, widow. Sorry bout the responses you got here.. not very helpful besides seamaiden..

 

[noobwidow]

Thanks, Ziggaro. I appreciate it.