My powers out and won't be on for at least another day. Luckily I have 2 filters and I'm able to use battery powered pumps to keep my sponge filters running..but, none of my tanks are heated. I'm not worried about the larger tanks, just my 2.5 gallon with 10ish cherry shrimp in it. It's been hot during the day 80s+ but dips to low 50s/ high 40s. Any steps that should be taken? Thanks