I did something dumb. i made an IPA recently when i should have done a lager. Have not done a brew in a while, first time doing one at my house alone. I got the basics to brew a grain brew but i did forget to get anything to measure gravity. its been about a week and the yeast was most likely it was too cold i didn't gauge the temp in the room correctly at all. I used and imperial yeast I think i need to throw in another yeast round but should I throw in the same exact yeast?