Whats wrong with this OG KUsh? Hydro under current setup

[rud3dog]

I have several of these growing in a 4x4x8 tent I have 1,500 watts of HPS but Im using alot of t5's atm to veg. I dont think Ill be veging for more then 4 weeks with my under current setup and tent. I have about 3 plant that have this problem of discolorization and I dont want any more to follow so I am trying to nip it in the but. Ph is 6 exactly, ppm's are 630, water temp is 74F. Please help me figure out what they are needing.
These are all og Kush #18 pervada and they kinda looked like this from the begining.
thanks

 

[massah]

Your hydroton should be covering those holes in the netpot to prevent light from getting to your reservoir, also it looks like nutrient solution got splashed on them, and your PH is a touch high...try to get it as close to 5.8 as possible, if you can get your res temps down to around 65F you'll notice your PH creep up less.

 

[bcurwi1]

yeah looks like you had some spots on yuor leaves with nutrients, causing the leaves to burn. That would be my best guess.

 

[Skunk.n'the.Trunk]

I agree with the two previous, but also thinking potassium def. your plants are a bit young to tell but look into it a bit more but if you're stems turn red its a good chance they need more K

 

[rud3dog]

I thought it was some type of nute burn. But actually my brother convinced me it was calcium burn and had me spray cal-mag on them. I lowered my PH 6.7 I added more of them pebbles and im working on it being cooler in the room, a new AC for set up isint cheap. Btw for 1,500 watts of HPS, a6" Vortex fan to the out side, what size portable ac unit do I need?

 

[lordjin]

Purple on the stems is normal for OGK.

600ppm too high for plants that small. You have nute burn. No exposed open slots on net pots.

 

[rud3dog]

Here is the lil guy who started all the trouble. What the heck is wrong with him?Honeslty the other 15 are ok.

 

[rud3dog]

Purple on the stems is normal for OGK.

600ppm too high for plants that small. You have nute burn. No exposed open slots on net pots.

Yes it seems high but im growing 12 plants at once what should the ppm be? My ppm was 280 before any nutes

 

[rud3dog]

Ok I have updated my system! I bought an reverse osmosis system and man it dropped my ppm's down I talked to my local shop and I think we have it covered. I was at 720 ppm with 12 2-3 week old plants, and I had leaves that were drying up. My brother and did some research and found out that the problem was the ppm's were to high and also caused MG lock out. My tap water went from 230 ppm to 12 ppm after buying the the R.O. kit. I love it! Also found out 1 major detail my local shop forgot to tell me, that my Under Current system needs only half the nutes, not to mention these plants were young. ppm now is 400 and ph 5.7. I bought cal-mag plus to replenish what the R.O. takes out. I think im on the right track but im always open to other users input. Thanks and fly HI

 

[Wolfhound]

Sounds like you totally got a handle on it.

 

[rud3dog]

Sounds like you totally got a handle on it.

What is going on with my plants? Im so worried.... Almost all my plants have a little of this. It looks like I sprayed the plants but I havnt. ph is at 5.75 ppms at 490 1000 watt HPS. Please some one help me

 

[Bublonichronic]

im not much of a hydro grower, but i do grow OG Kush, and boy is it some fire! hope you got everything under control

 

[MR.ROOKIEGROWER]

dude if it was me i would go to barnes and nobles and pick up " Marijuana garden saver by j.c.stitch edited by Ed Rosenthal " help u out alot well hell i know it helps me and it hv pic of nute diff. hope this help ya

 

[rud3dog]

I think I figured out the problem on my own. I belive its the new 1k watt HPS burn. I couldnt find any pics that matched my problem but it looks like I had to much light on these guys. Correct me if Im wrong but Ill be lifting up my HPS alot higher till they get bigger.

 

[neved]

Ok I have updated my system! I bought an reverse osmosis system and man it dropped my ppm's down I talked to my local shop and I think we have it covered. I was at 720 ppm with 12 2-3 week old plants, and I had leaves that were drying up. My brother and did some research and found out that the problem was the ppm's were to high and also caused MG lock out. My tap water went from 230 ppm to 12 ppm after buying the the R.O. kit. I love it! Also found out 1 major detail my local shop forgot to tell me, that my Under Current system needs only half the nutes, not to mention these plants were young. ppm now is 400 and ph 5.7. I bought cal-mag plus to replenish what the R.O. takes out. I think im on the right track but im always open to other users input. Thanks and fly HI

====
Wish u always enjoy your growing ....
https://www.rollitup.org/marijuana-plant-problems/467439-issue-my-rooms-plz.html

 

[rud3dog]

Ok it got worse.This is the same leaf but got worse. Now im thinking its not light burn becuase my new mother plant in the veg room got one of these leaves too and im finding no connection for the mother is under 4 t5's
can some one help me figure this out please?

 

[bcurwi1]

http://www.marijuanapassion.com/forum/showthread.php?t=54277

Check that out, it looks to me like a nute deficiency or over powering...check out that link it has some great pics bruh....

 

[ape it]

Its a nute burn. Run the DWC at 200ppm max for the first 2 weeks of veg. Are you running RO water? If you are running RO water you must add cal mag.