Urgent! No Heater For Qt

So I screwed up royally. Currently I have a 46 gallon tank set up with 4 peppered Cory's and a BN pleco in it. I just purchased 6 cories to raise the population and I was going to house them in a 10 gallon quarantine. However the 10 lacks a heater currently because of my forgetfulness. The nearest pet store to me is at least 40 minutes away and I can buy a heater earliest tomorrow night. So my question is do I risk no quarantine or do I house them in the 10 ( the water is about 16-17 degrees Celsius) which is too cold for them. So the most time they would be without a heater is at least 24 hours
PS another option is taking the heater in my 5 gallon Betta tank for now for the 10.

 

Can you just turn up the heat where you live?

 

Can you just turn up the heat where you live?

I think so. The tank is in the basement where it's a little cooler but I could try

 

That may work until the next day when you can get a heater. Good luck!

 

Thanks

 

Is there a container you could float in the main tank to keep the temperature up? I like what you are doing, though. Update us tomorrow!

 

Is there a container you could float in the main tank to keep the temperature up? I like what you are doing, though. Update us tomorrow!

That's a good idea but I think I'll stick with the original plan. Should be good for a day I think. Thanks though

 

How’d it go?

 

How’d it go?

It worked! I got a heater now. No casualties. One died in the main tank though today