Leaves curling from the side's

[Marcutz]

So this is the first time growing in PRO-MIX HP for me, I usually use Fox Farm or Black Gold soil with great results. But this round i wanted to give Pro-Mix a try and I'm noticing red stems and a couple of the plants leaves are curling from the side. Everything is looking really good except for the red stems and curling leaves. And it seems a couple of plants my have stopped or slowed growing. There is no nute burn, or burnt tips, I have run these strains before and have not encountered these problems. Im using RO water, CaliMagic, Advanced Nutes Sensi Grow A&B. Ph-6.3,E.C.-1.8,TDS-900 and my feed schedule is feed,feed,water. Any and all help is appreciated.

 

[NuttyProfessor]

my first guess is Nitrogen toxicity , them leaves are too green and the tip is just starting to claw .

 

[Marcutz]

Hmmm. So you think I should ease up on my Nutes? I've ran these strains before in soil, and they are really dark leaves from the start...Thanks for your help.

 

[NuttyProfessor]

i could be wrong but ive had problems with N toxicity last year , if they start to claw more flush her out asap , the strain could be dark but how dark , what strain is she , ,

 

[Marcutz]

Candyland, and Blue Cookies... they been taking the nutes pretty well, and its not like its all over it's just on a couple of leaves.. But i want to take care of the prob before it gets worse. And I'm just about to start flowering at the end of this week.. You think i should flush real well before adding my bloom nuts? Btw.. Thanks for your help.

 

[Antics]

Leaf tips pointing down, NuttyProfessor is right on.

The margins also appear to be curling down, for this I would check light distance and temperatures.

 

[Denzidrine]

Red stems could be a sign of deficient phosphorus. Also some plants just have a natural reddish color, but I'm leaning towards low P.

 

[Marcutz]

Thanks guys... Yeah i think ill just flush real good before i flower them...

 

[Marcutz]

So, i think its a Calcium def. i upped the cal mag to 250 ppm and they seemed to like it a lot. lightened up and curling went away