Help needed - 1st time grower and leaf problems

Hi there,
Here I am at my first real attempt to grow indoor, I am now at about 25 days and my plants are starting to show some problems and I am freaking out. I hope you can help me with soem good advice.

First of all my setup: SilverBox 3 x 3 x 6, Cooltube with 400w Metal Halide - Extractor fan inline with cooltube and carbon filter at 130 cfm - not great but I live in a colder area so heat is not a great issue - temp is around 27 degree - 23 when lights are off so I think they are ok - RH ranges from 50 to 60% atm - water PH quite stable in my area at 6.7

The above is all I have going on at the moment.

In the box i have 4 plants - Cheese - Shining SIlver Haze - Strawberry Cough - Northern Light all bought from either Dinafem or Royal Queen Seeds

The plants have germinated in cottton Wool and grown as seedlings in little pots to be transplanted just 6 days ago into 11l (3gallon) square pots. I had a very light mix in the tiny pots but in the new 11l pots I used John Innes no.2 soil mixed with Perlite at 60 soil - 40 Perlite

Since the transplant growth has definitely accelerated to my joy but then a coupe of days ago I started to notice leaves wrinkling a bit on their superior part but only at the base of the leaves (where the stem is) and not at the top. Since then, the wrinkling has become more together with a slight curling upward of the leaves. Today I can see some tiny yellowi/brownish spots on a couple of leaves and also soem new leaves start to look very strange with their structure definitely more yellow then the rest of the leave (eg all the veins are yellow) I am attaching all pics I have and I am open to any advice really. I just hope not to have 20 different opinions otherwise it will be even more confusing for me but I thank you all in advance anyway for yuor support

Extra info - I have used no nutrients at all so far, so if it is nutrient burn could it be only from what is in John Innes no2?

I am sure I am doing something wrong but don't know what? Or am I over preoccupying?

Please fell free to tell me I am an idiot as well if I deserve it for not giving these nice plants the care they need

I am attaching all pics that I have in the next posts? Or else yuo find them in my album

Thanks a lot again!!!!
papelone

looks like they need some nutes. try giving low dose and see what happens.

well, howd it turn out?

This is typical of going from one mix to another ...and it does take 3-5 days to show, treat as for standard nute burn and flush well, 3 times the volume of the pot, with air temp water, whats saved you (Lucky U) has been the volume of perlite, in most cases I recommend 30% perlite with these 'hot' soils you get these days.

the wrinkling is leaf phyllotaxy and a breeder issue that in time should grow out of

stay sharp. most seed don't require any food for the 3-4 weeks month or so, a hot soils are just that Hot ...high in nutes ..lol

Hi I have strawberry cough on ATM 4 in 11 l pots under 600w hps and using a ml to a ml/1/2 of vitalink hydromax hw. Ph seems to stabilise in 6+ never let it go over 6.5. I have yellowing on the first leaves they had. Any idea why? There's loads of different diagnoses when I look it up. Is it something or nothing? Thank you

I had the same problem I was going by the directions with my nutrients when I should have been just putting half strength you may want to lift your lights to 12 to 18 inches and make sure you have good ventilation

Hey Vikkijp .... vostok is absolutely correct.
Less is more in the early stages.

600 watts on new plants may be too much light IMHO .
I start all my shit with T5's and have had better success flipping them to higher wattage lights when about 1.5 ft tall and a few months old.