Magnesium \ zinc deficiency?

[fonzee]

I got some Jilly Beans growing under a 600W and mainly one of them is showing some issues. The rest show the issue as well, bad really not that badly.
Might it be Mag def? maybe zinc?

I've used ~7.8pH water with a rich organic soil.
My water is hard and contains quite a bit of mag. as I've never had issues with mag before.

Temps are around 29°C at lights on, humidity around 45%. No CO2 addition.

The plants are pretty close to the light (15-25cm) and the light is cooled by a cooltube and ~350cfm vent so it gives a lot of radiant heat but the glass is cool.

They are around 3 weeks into flowering after 5-6 weeks of veg in the same setup.


I got a link in my sig for their journal where more information could be found.



Thanks

 

[kerlito]

hey i have same plant than u

 

[kerlito]

Posible need more nutes

 

[fonzee]

I went through the links in your post and it really looks like mag. def to me.

Is there any convenient source for magnesium?
I know molasses contains some, should it be enough?

 

[kerlito]

i don´t know if someone say u another thing

 

[kerlito]

becose i don´t like when i have one def of any nutes i don´t like to put just one , if not , can happend edf of another , i prefer do my way.

 

[fonzee]

I really don't want to move the pots to do a flush. And I haven't fed them anything that could cause the problem up to when the problem started. Only composts, TINY bit of BioBizz nutrients and a bit of bat guano.

 

[kerlito]

Goood luck

 

[fonzee]

Thanks mate

 

[northstate]

Hunger

Hunger

Hey Fonz-
That light green look to your plant would be from lack of nitrogen and Mag. your girls are eating a ton of it to flower for you. Probably related to Ph being too high IMO or just not feeding enough. Nute solution in soil should run from 6.2-7 and not above(unless your correcting stuff). True organics doesnt care what the ph is but you have to set your soil up to feed accordingly. I would say to pick one and give her 1/2 veg 1/2 bloom nutes @ 6.5ph maybe half strength. They seem overall to be doing good though. I will re-read your form but good luck! NS

 

[fonzee]

Thats what I thought.
I'm feeding them with a tiny bit of high N fertilizer (GHE total gro, fucked up shit but thats all I have currently that is fast acting) and 60-70% strength flowering nutes. (60-70% from what I would like to build up to)
pH of the solution today was 6.3 and I believe the soil is higher. Last watering it was around the same.
I hope it would fix up.

When really examining the problem its only one plant that really shows it.
I gave her some extra seaweed extract for some microelement and stress-relief. She actually grows pretty damn awesome. Don't want to get in her way.