Clone issue's

[Redz Medz]

Hey all,
I took a load of clones that weren't in the best of shape but ive managed to save most of them. I cant figure out whats wrong with them now though, think theres a couple issues i cant fathom.
heres the pics of all the clones and various ailments if anyone can help would be great thanks.

[bigbadbillybob]

magnesium defficiency and they look underfed.
it also looks like your temps might be a bit low, red stems, but it depends on strain.

add some cal mag and feed them at about 1.2 1.4 ph to 5.8, should sort it.

[Redz Medz]

Cheers @bigbadbillybob i knew i had to up the cal mag just trying not to overdo it, same with the nutrients as ive found they are so easy to overfeed. Started off at 1/4 strength nutes first then upped it to 1/2 strength and as you can see started getting nute burn.
Ive never had the twisted ends of the leaves before or the little yellow spots/blemishes on some of the leaves, any idea on those?

[Redz Medz]

Right about the temps they were sat at 23-4c ive just upped those alittle bit aswell.

[bigbadbillybob]

the yellow spots are magnesium defficiency, the twisted leaves are usually ph related, but you didnt say what ph they were getting so i cant say for sure.

when you say 1/4 strength or 1/2 strength, this can vary wildly depending on you base water readings. i take it you dont have an ec pen or ph pen? in which case its not gonna be an uphill battle, its gonna be like climbing everest in yer slippers.

[Redz Medz]

Ah fair enough @bigbadbillybob they just looked different to all the pics of magnesium difficiency i was looking at.
As there in coco ive had them bang on 5.8 but the ec has been low at 0.70 with 1/4 strength nutes.
i know its meant to be higher but it just gave them nute burn when i had it that high before.
Cheers

[bigbadbillybob]

ah right if the ph was bang on the leaf twist must have been calcium related, (a by product of the mag def) so i would add some cal mag to the mix.
yes your feeds do sound a bit hot, but im used to hydro, i would up it for a few days and see if the centres of the plants darkens up a bit. if it does you know you're on the right line.
hope you get it sorted

[Bulls]

I'd let the pH drift a bit. I found out drifting 5.8-6.1 in veg keeps the plants very very happy. What nutrients are using and what's your background water ec?

[slimsantana]

imo they slightly hungry though this mite be duw to me second thought possibly cold a lights out....... if so at lights out ewe want temps of 23/22 at least imho until ewe warm it up your gonna suffer,also the drop in day temps and night temps should nort exceed 5 degrees i talk shite mind ewe . atb

[Redz Medz]

@bigbadbillybob will up it for fridays feed then, maybe i just tried upping them too early before and were too yoing to handle them. Cheers