Pale plants on day 8, help needed to pinpoint issues :)

In my opinion light burn will stunt them much more than lower temps.
Can you use a heater or insulate the tent/ room
 
:toke: ..good that you elevated the lights, they were too close, and could be behind this; seedling really dislike overly intense light, they don't need it as strong as older plants... But soil isn't out! Bad batches happen, off pH, contaminants; it's plenty light on nutes, so starting feeds at dilution as HM mentioned will be fine,.. what are you using? The NPK#'s will determine how much dilution to do,... and if there's no improvement, then a safe conclusion is the soil is shite for whatever reason,... when all show such issues this early, it's usually the [HASHTAG]#1[/HASHTAG] suspect. barring environmental issues which you had some of,... let's see what a few days and light feed brings,... do you have a pH meter? I'd for sure do a run-off test of the soil right from the bag, following this method and calculation- ( https://www.autoflower.org/threads/...-testing-and-ph-estimation.41733/#post-928975 ) -- this will at least determine if it's pH related, pointing the dirty finger at this bag of soil,...
 
Im thinking that having the light WAY to close during the early stages is what have caused the issues.
Im gooing in light with AN Sensi bloom (doing Tangs easy auto schedule).
The oil rad i installed has gotten temps under control and the light should no longer be a problem.
No PH meter to measure run off, will get one if there is no improvement over the weekend - 5 days.
 
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