dark period

The area I live in is about to get hit hard with snow and ice. I’m really worried about a power outage, maybe even one that could last 2-3 days. What should I do to prepare? Is there anything I need to know? I’m growing RDWC hydro, my plants just flipped to flower about 8 days ago. Should I be...

Hey guys sorry for the basic question but do my plants need air during the dark period? I guess what I should say is I know they need it but will it greatly damage them if I just shut up the tent for 12 hours a day? Because I haven't been able to afford a fan and ducting quite yet.