lowrdyer troubles

hey everyone,

these are my lowryders that are just about 2 weeks old today,
they are under 4 x 18W daylight 2 foot batten fluros soon to go under my
newly bought 400W HP

they were planted in a seedling mix potting soil in small foam cups with holes in the bottom.
i have been watering with distilled water every 2 days or so, but they have only had
one 1/4 strength feed of nutes which i gave to them yesterday after seeing theyre horrid state.

it looks like they have every deficiancy under the sun but i am just seeking some advice.

i know they need repotting into biger pots soon and i will do so before they go under the HPS,
most likely organic potting soil/perlite/verm

should i repot now, while they arent very healthy and bump up the nutes,
or should i wait until they come green again with some nutes then repot.

here are some photos and thanks advance

Knock off the nutes, thats your probem.

maybe its just me but over-watering doesnt seem to be the biggest newb mistake. It's using nutes too early or too much.

now im confused,

the plants started looking like this BEFORE i gave them any nutes whatsoever,
and i have been using a moisture probe to check the soil, so i dont think it
is over watering,

could this be a heat issue in my cab, the leaf on the right in the second pic is
all dry and crispy....?

i really dont want to lose these lowryders....please help!

update,

have flushed all ten plants with distilled water thouroughly.

current temp in cab in arounf 65F and humidity is 40-50

does this sound ok

cheeeeeersssss