should i start over?

I left today and when i got back my light was off. it was an hour and a half late and the temp dropped to 48 when it averages 78. my seedlings are 5 days old. should i just scrap them start over?

they should be just fine, dont let it happen again...lol

what kind of seeds?

my temps have been hitting 50 degrees when lights off last week. Stunted my plants but, If in veg and you dont mind Vegging longer no ISSUES. only time Cold will Effect Yield is when its in Flower.. or if you dont let it VEG extra time.