Cal/Mag Deficiency What Can I Do?

[Robnstuff]

I have what I think is a cal/mag deficiency.

First of all am I correct? and second of all what can I do?

I have just given it a plain PH'ed water with 1mil per litter of CaliMagic.

Is there anything else I can do and how much will this set the plant back?

I'm using Canna line of nutes ( Flores, Boost and Rhizotonic), plant is 46 days old and well into flower and hasn't be given any cal/mag supplements until today.

Also grown in Canna Terra Pro Plus soil with added perlite.

Any advice that will cheer me up would be great!

Thanks

 

[JustForFun]

Feed that girl! Looks nitrogen def to me. Not cal mag. But I’m a noobie!
Good luck!

 

[Arthur]

What kind of lightning? Cannabis is a cal/mg hungry, LED lighting can make it voracious.
Cal/mg needs to be given regularly, from early on.
Does look like calcium dif. Veins staying green, yellowing in the tissue.

Don't change your feed and feed just cal/mg, add it in to your regular feeds.

 

[Robnstuff]

What kind of lightning? Cannabis is a cal/mg hungry, LED lighting can make it voracious.
Cal/mg needs to be given regularly, from early on.
Does look like calcium dif. Veins staying green, yellowing in the tissue.

Don't change your feed and feed just cal/mg, add it in to your regular feeds.

I’m growing under LED and I did just turn on my extra light now it’s in flower which might explain the super sudden change. Up until a few days ago all looked perfectly fine. Now about 60% of all fan leaves are yellow.

 

[Arthur]

I’m growing under LED and I did just turn on my extra light now it’s in flower which might explain the super sudden change. Up until a few days ago all looked perfectly fine. Now about 60% of all fan leaves are yellow.

Remember when we see it in the leaves, we're looking back in time. Probably been low for a week or more. I don't mind having extra cal mag in the beginning, calcium is the building block of every cell. It's not like having too much nitrogen... I suppose like everything, it can be overdone. I run a different nute line that is calcium based, so I don't use the standard cal/mags (if I do, you can watch it turn to gypsum in the bucket), and I load calcium in multiple sources...pretty heavy. Looks like she got real hungry right at the switch, might she be overall hungry?
I'd find someone running your line that is rocking it, hit them with an @ and ask a few questions. See what the level of this and that they're at were you are in flower.

 

[Waira]

... Mg defc. mates, Ca defc. never causes this pattern of interveinal chlorosis,... Rob, too little Ca-Mg, go full dosage... any other nutes going in? Get us a whole plant pic in normal light to confirm diagnosis,...

 

[hairyman]

Now,, I must confess to like the looking back in time thought process of one of the posts ,I was unsure about the committment and conviction of the diagnosis of some repliers dammed stoners ,,,never trust one that signs of with but I don't really know what I am doing

But I will pick your best bet is to go with what Waira suggests