BRIGHT Yellow tops

C

cass

Active Member

• Jun 3, 2009

• #1

I am growing some WW and this is the second round. the first went great but now i have 6 clones in a top feed hydro set and the leaves are bright yellow on top. i believe this started when i switched nutrients (humboldt nutrients), though i am not sure. they are about 3-4' below a T5 floro light which is what i use to veg before putting them under a 400w HPS.

Pics are attached, please let me know whats happening here!!

 

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listo209

Member

• Jun 3, 2009

• #2

BUMP: My plant is doing the same

 

dustinrr18

Active Member

• Jun 3, 2009

• #3

you shouldnt be nuting it if its that small bro. idk if thats the problem but it definately aint helping

 

NeOgRa

Well-Known Member

• Jun 4, 2009

• #4

bump,bump, same here, mine are not that bad but still having the same problem.

 

M

mdgcmd

Well-Known Member

• Jun 4, 2009

• #5

What kind of water are you guy using RO, well, rain, tap? Are you using JUST the humbolt? I have not used it myself but the hydro shop says it's the new great thing. I stick with the DM One that I have been using. Also For first timers GH flora series is a great starter nutrient.

 

spiked1

Well-Known Member

• Jun 4, 2009

• #6

I have been having the same problem for a while.
Sulpher deficiency is the usual culprit, add some Epsom Salts (Magnesium Sulphate) although it may take a few weeks to clear up.
I also found backing off the lights a little helps as well.
Are you using any foliar sprays with Penetrator?

 

NeOgRa

Well-Known Member

• Jun 5, 2009

• #7

Well I'm using rain water,roots soil and my PH is 6.5. and 1000w HPS about 18" away. It suck because I'm 1 week into flowering and this is really slowing things down. The hydroponics guy at the store told me that it was a calcium def. So i dont know.