New Grower First grow - Leaf damage

[calitree2263]

Strains: Northern light blue and grape muerte auto
nutes: grow big/big bloom
all four plants have visible rusting in the lower fan leaves. I noticed them today
it's the twenty third day of growth, plants are pre flowering. new growth looks fine.
I was thinking calcium deficiency? I'm not entirely sure but I want to stop a problem before it happens

thanks if anyone can help identify this

 

[briman]

Lookin like cal deficient to me, hit em with some calmag, bout 5 ml per gallon to act a little faster!!

 

[calitree2263]

Ty for input, I'm going out to get some calmag soon.
Lets say I have 6.5 ph water.. could I mix both cal/mag and veg or bloom nutrients into the water or should I give them separately?

Thanks

 

[Dazed]

Hey man, just check the pH of the solution after you have mixed it, then make any amendements, just to be sure you dont' screw up your pH buddy.

 

[briman]

both at the same time is fine, but you want to add the cal/mag FIRST, mix let it set for a couple minutes, then add your nutes and check your ph.
Cal/Mag and Silica swing your ph and should always be added first.

 

[calitree2263]

White trailing on the leaves where it's turning brown.. could it be a bug of some sort?

I'm gonna get the cal mag anyway since I use RO water. Also I never put anything in my soil unless its ph tested 6.5-7.0
Does calmag make ph go up? how could I fix that?

 

[dragondust]

Looks like leaf miner. Try some neem oil spray

 

[joshua311]

I am with Briman on the cal/mag issue I have had and still have that same problem. I waited to long to add the cal/mag and now I am fighting to correct it.

 

[faded187]

yep that there is a leaf miner trail.

 

[calitree2263]

I have a local product called "green clean" thats supposed to kill insects, spider mites, and powdery mildew, but I don't know if it's killing the leaf miners
Where can I get neem oil?
any homemade/cheap solution suggestions would be helpful