What is this?? Outdoor Bubblegum Grow 2011. Is this a Cal-Mag problem??

[Nic Rails]

First outdoor grow.

Bubblegum plants in 5 gallon buckets, promix soil, fox farm nutrients at half strength once a week.

First it was only one plant that started looking like this, now everyone has started showing signs...
I think its a Cal-Mag deficiency, but I'm too new to know for sure...

Can anyone help me determine what it is so I can fix it please!!!

 

[Bublonichronic]

if your using the FF liquid trio, and tap water, there should be a good amount of Ca and Mg and even iron, for a decent sized plant....but bigger plants will need more in a cal/mag supplement, my indoor plants need the "advanced feed" of 2 tsp cal/mag every watering, and that is actually starting to look like its not enough...but i wouild say, first bump up your feed to full strength and see how that works out for that hungry girl

EDIT: i forgot to mention that it lookd K def

 

[Nic Rails]

I should have mentioned that of the five plants, four of them are around 5 1/2 to 6 feet.
I have one who is a little runt compared to the others, she stands at around 2 1/2 to 3 feet and was the original shower of the deficiency problem. This morning I used some eggshells and epsom salts in the ph'd water. I also added a nail, for a little iron.
The thing is, I did a nutrient soil test and although I think the one I used (CIL) is hardly accurate, according to the reading - it also shows a little low in the Potash rating.
At first the leaves yellowing was very slow, now its rapidly picking up speed as we've just moved into budding stage...
I just dropped the Grow Big from the feeding line-up and now am adding the tiger bloom, and big bloom.
Thanks for the tip. I will try to find a potash supplement and see if that works.

 

[Bublonichronic]

keep growbig in the mix...use it at 1tsp. till like week 6ish.... and use your tiger at 1-2 tsp, and bigbloom at 2tblsp...thats what the feed chart suggest, in exception for keeping growbig, but MJ needs more Nitrogen than in most flower nutes..but those 5 ft monsters are prolly starving at 1/2 strength FF...

EDIT: also, my SLH is my smallest plant, but it also uses the most Mg and iron, a total whore... so thats why is shows def b4 my other strains, even tho its almost half the size

 

[MrGhettoGrower]

6' tall I'd feed'em full dose every other watering/feeding

 

[novice11]

What brand of CAL-MAG do you recommend?

 

[Bublonichronic]

What brand of CAL-MAG do you recommend?

iv only used botanicares, works good and easy to use...but i want to try some other brands at some point, i think they all should be alright tho

 

[Nic Rails]

iv only used botanicares, works good and easy to use...but i want to try some other brands at some point, i think they all should be alright tho

What about eggshells and epsom salts? alot cheaper...

 

[Bublonichronic]

What about eggshells and epsom salts? alot cheaper...

i dont personally use them, mainly because the shit is more plant accessible in the supplement...but i dont see any reason they wont help, just dont over do it..

 

[Nic Rails]

Thanks for the info. I've gone full strength with the Fox Farm this week, seems like the yellowing has slowed or maybe its just my wishfull thinking...