New grower help with defeincy/burn!

[CrystalJack]

Hi guys first grow since the high school closet days, anyways just got some clones and they are showing some nasty rust spots on a lot of the larger fan leaves, wanted some help identifying it as ever deficiency chart I look at so many look so similar!

All are in 1 gallon royal gold tupur coco/perlite
Front row ag nutes
Water 24oz at transplant

Wanna get these babies back on track

 

[AgentPothead]

Hey bro looks like you starting a calcium deficiency.

Do you know the PH of the water going in? Calcium is locked out about 6.2 on soil. If you can source some Calimag or Calimagic, that will work. I've heard of people using egg shells as a home made option, but have no information on that myself. You can also use calcium nitrate, as it's water soluble, but not during flower as the extra nitrogen isn't helpful. https://en.wikipedia.org/wiki/Calcium_nitrate

 

[CrystalJack]

I PH’d the solution to 6 for the feeding, not sure what runoff was. I’ll pick some calmag up in the morning, should I leave the affected leaves? Pluck them?

Also next feeding should I just add some calmag in on the next feeding as the coco is still has a good amount of water or add it ASAP?

 

[AgentPothead]

I PH’d the solution to 6 for the feeding, not sure what runoff was. I’ll pick some calmag up in the morning, should I leave the affected leaves? Pluck them?

Also next feeding should I just add some calmag in on the next feeding as the coco is still has a good amount of water or add it ASAP?

Oh are you in coco? That's more like hydroponics than soil, so I think you can go a little lower before CA lockout. What I was doing when I ran coco was letting the nutrient water swing in PH a bit, 5.8 up to 6.2 that way you can cover all the bases on nutrient absorption. I wouldn't pluck the affected leaves, the brown marks are permanent, but the rest of the leaf is still producing energy for the plant. I would probably add the calimag to your next feeding, but if you are really worried about it you can try using it as a foliar spray. I don't know exactly how much I add when using as a foliar, I just kind of eyeball it tbh, but it's not very much at all. Maybe 1-3mm across the bottom of the spray bottle, then fill the spray bottle up half way with water, shake profusely, and give the leaves a light misting, you don't want water dripping off of them. I've found that works for my setup.

 

[CrystalJack]

Thanks for the super fast advice! I’m gonna check the pots in the morning see how light they feel maybe they will be ready for another feeding if not I’ll go foliar prly and will report back

 

[AgentPothead]

Thanks for the super fast advice! I’m gonna check the pots in the morning see how light they feel maybe they will be ready for another feeding if not I’ll go foliar prly and will report back

NP bro, and yeah please report back either way! Good luck.