Here we go again... Massive yellowing

[Squire5683]

I thought i fixed this issue last go around. Ebb&Flow bucket system, GH nutes at about 1300ppm....PH 5.8-6.0 EC 1.8
Hydroton, feeding 15mins every 4 hrs. Temps around 78, rez temps 68
I also have Cal/Mag, Hydrogen Peroxide, and Azamax in rez.

Bubba Kush 30 days into flower.... All I need is another 30 days!! Help!!

One plant started spitting one yellow leaf a week ago, so I started watching. The first few went yellow quick and then dried up. Now it seems that the whole plant is yellowing. And the next one to it also.

Im figuring rootbound, so I elevated my buckets about an inch to give them more room, but that was two days ago, and its still doing it. Getting bad. HELP!!
And no I dont have root aphids.
And I changed out all NGW crap out of my system.

 

[resinryder]

When you put them into bloom did you go straight into using full on bloom nutes?



EC 1.8- Lower that to around 1.5 to 1.6.<My honest opinion.

 

[kerlito]

for my it´s almost normal , but can put yur solution high of nutes

 

[Squire5683]

I have had them on Bloom schedule for 30 days. I gradually upped from 1150-1300 over the last month. They dont show nute burn at all. Should i increase to higher ppm? Are they just hungry?

 

[resinryder]

Ok I'm gonna ask you this again-When you put them into bloom did you go straight into using full on bloom nutes? meaning on the 1st day of bloom did you begin using the bloom mix for the gh series?

 

[kerlito]

Ok I'm gonna ask you this again-When you put them into bloom did you go straight into using full on bloom nutes? meaning on the 1st day of bloom did you begin using the bloom mix for the gh series?

i think the same

 

[resinryder]

kerlito-That's where I'm going if that's what he did.hehe

 

[kerlito]

yes , lol

 

[Zen Master]

Azamax in your rez 30 days into 12/12?

a systemic pesticide?

why???



calibrate your pH pen, get some $5 drops to double check.

are you tapering off nitrogen right now? you said 1300ppm but not at what ratio of micro/bloom

 

[resinryder]

Was wondering that too. Must have a big bug problem?

 

[PoopyTeaBags]

looks like lack of nitrogen to me... feed grow nutes fist 1-2 weeks of flower and switch over to bloom after stretch or end of stretch...

 

[redspaghetti]

when you first start the bloom nutes, go easy on em and load em up over time

how close is your lights to the canopy ?

 

[BrainSellz]

i always roll with a lower ppm....anyhow bro make sure your half inch tubing is NOT made from N-G-W....i dont see the markings on it but just make sure....

 

[resinryder]

looks like lack of nitrogen to me... feed grow nutes fist 1-2 weeks of flower and switch over to bloom after stretch or end of stretch...

Same thing I was thinking. It looks like you plants have used all there stored nitrogen reserves resulting in the leaves turning yellow so soon. And here's why. Your plants going into bloom need to store up as much Nitrogen as they can to get through the bloom stage. Bloom nutes are low in N. If given bloom nutes as soon as going into bloom, the plants starts pulling its stored reserves of nitrogen from the leaves because it still needs a bit more nitrogen than most nutes provide. Early into bloom process the leaves will begin yellowing, as they are in your case, because they have used up the stored reserves of nitrogen. Natural process.
Using higher levels of Nitrogen, a little extra given through the bloom cycle, will help to keep the leaves greener, but I prefer to load them on the front end and leave it at that.
Here's how to delay the process-strictly my opinion and where I have the most success in my bloom room.. I go by a plants bloom time, up to 65 days they get 2 weeks and over 65 days get 3 weeks, when determining how long I'm going to feed veg food.
For plants up to 65 days, I use full veg nutes for the frist week. At day 10 into bloom I add some of my bloom nutes to the veg nutes. In my case, when I add water to my res at day 10 I adjust the veg nutes to at least EC 1.0 and then add bloom nutes to and EC of 1.4 to 1.5 to top off the res. At the beginning of week 3 until finish it's bloom nutes until flush begins.
For strains going over 65 days which need to store nitrogen for a longer time I do the same thing except I add the bloom nutes to the res in the middle of the 3rd week and begin bloom nutes at the beginning of week 4. And I extend that out for strains going over 90 days.
I usually run at the top end an EC of 1.4 to 1.6. I find that this range is about right for most strains. Some like more some like less but that's fairly easy to figure out early on. When the very tip end of the leaf gets that slight burn I know when I'm where I want to be. Less is more.

 

[Squire5683]

I have had them on Bloom schedule for 30 days. I gradually upped from 1150-1300 over the last month. They dont show nute burn at all. Should i increase to higher ppm? Are they just hungry?

So yes... When I went to 12/12 i started a 1150ppm bloom schedule as prescribed on the GH nute calc. As the last month progressed, I have bumped the mixture to about 1350ppm. I have approx 35 days left in flower.

Im currently using this mix in my 50gal rez:
FloraGro - 250ml
FloraMicro - 500ml
FloraBloom - 750ml
FloraliciousPlus - 50ml
LiquidKoolbloom - 250ml

If this is nitrogen def, what can I add to help?
I also use three separate PH meters to triple check, as well as 2 PPM meters. I calibrate them weekly.

 

[resinryder]

To be honest, not a lot you can do about what has yellowed at this point. What I would recommend is this.
Lower your nute ec to around 1.3 to 1.4. Why? Because now instead of all your leaves and buds needing food your buds will be getting more than they need causing therm to have too much available to them and they will start to burn. You've gone from feeding a whole plant to feeding much less. To save what you have you can raise the grow portion a bit and lower the bloom amount. This will give them more nitrogen so that you may be able to save what hasn't turned yet and help aid the bud development.
If you raise the bloom nute EC, like you asked in one of your post above you won't fix the problem you'll make it worse and begin the process of burning your buds up.
Take the bubba to 75 days before chopping. This will make all the difference between good bubba and great bubba ;-)

 

[Squire5683]

Res... Thanks for the help. Im debating on dumping my rez and starting fresh. Will this help? If so any recommendations on amounts of nutes to add to my 50Gal rez?

 

[resinryder]

I'd dump the res mainly to get rid of the Hydrogen peroxide and azamax. Don't like using either of them but then again I've never had a need for them either. I haven't used the GH 3 part in years so I can't tell you how much to use. If it were me, I would raise the grow part and lower the bloom part. Maybe make your 50 gallon mix 1/3rd grow to 2/3's bloom? This would give you mainly bloom nutes with a nitrogen backer for a week or 2. Mainly looking to see how they look after a week and go from there. You don't want to over do them at this point.
Hopefully someone with GH experience will chime in with some better info for you.

 

[Squire5683]

Thanks everyone for the help. I just flushed out the system, and have fresh tap water in rez.
PH 5.9
PPM 250
EC 0.4

Im gonna let it flow through my system for the night, then add nutes. If anyone has any ideas how to mix a good GH 3part that will help my deficiencies, I would greatly appreciate it!!

 

[Zen Master]

I use 6mL micro to 9 mL bloom per gallon, no grow at all, plus my supplements, this is on OG Kush varieties though and they like it light...