Purple stums and leaf stalks question

[Flange]

Hey all, theres afew BB clones that have just gone into veg under a 400w hps. They were cut off an already purple stemmed plant in the hope the new clone would come good, but it hasnt gone green again yet.

 

The leaves are slowly turning yellowing and with a few necrosis spots popping up here and there on afew fan leaves, also theyre looking kinda flimsy. Now theres been nothing new done to this batch that havent had good results in the past, using the same proccess and mediums/ferts.

 

BTW, Im growing in a soil/perlite mix if that helps.

 

Now i just wanted to know if theres any specific products that will fix whatever is wrong with them? So far ive narowwed it down to a Phosphorous deficiency so is there anything i can use specifically for this ?

 

Peace

[SukonmiSkunk]

do they have roots?? and if so what are you feeding them?? and at what strength.??

[Flange]

Yea, theve all rooted fine and seem established in the new pots, just growing very slowly and kinda thin all round.

 

Im using the same fert (canna veg) ive always used, any idea what could be causing the purple?? or even better just how to fix it

[thc24]

night temps could be too low.

 

solve by using a heat mat on 30c 24/7. once plants get bigger and root ball is larger in a bigger pot root temps wont get so low.

 

 

During winter a very common problem, does mess with growth rate more food and steady temps. purple stems stay purple but new growth will be green and plant will grow alot faster once feeding and temps sorted.

 

If you dont have a heat mat run lights 24/7 until big enough for a transplant to bigger pot.

 

goodluck mate.