Bottom leaf tips are yellowing/burning?

Hi! Newbie here worried about my first grow. I’ll admit right off the bat that I am pretty uneducated with this stuff, and am doing this mostly for experimental fun, so I apologize beforehand. I currently have my ~3wk old fem W.W. in a 2gallon fabric pot of FFOF. She’s chilling in a 2x2x4 grow tent under a (possibly) 300W LED. Just moved her from a solo cup about 4 days ago. I noticed her bottom leaves were starting to yellow and assumed it might have to do with being in the solo cup for a while, so I transplanted to a 2 gallon fabric pot. I think I messed up on the transplanting as I incorrectly read somewhere that the soil should be dry when moving it, and now I’m worried the roots are ruined from being dried out. Anyways, I checked in yesterday and noticed that the leaf tips are now looking slightly brown. I fed her nutrients only once, which was the day of the transplant, and have been using normal water since. Temp + humidity usually lie within the 70-79°F and 57%-67% range. Let me know if I need to post more info. Anything helps!

It's not unusual for those first leaves to curl up and die...as long as the new leaves look ok, that's what's most important at this stage...and they do look ok from what I can see. Turn your grow lights off when taking pics in the future so we can see better.

Welcome to the site, start reading, and enjoy your new hobby!!

Not to worry about the bottom leave. FFOF has plenty of nutes in it. I find it can be too hot for some seedlings. If you transplanted into 2 gallons with FFOF you don't need to fertilize Probably until you flip to bloom. Maybe add Cal Mag periodically though.

Thank you for the help guys, definitely eased my nerves. Will look into buying some CalMag and remember to take better pics for next time.