They are on sale on Amazon, but they aren't on super flash sale like they were last week anyways if you do end up putting a heater in there use low power and point it away from the plants at full power you'll fry that inkbird.
I'd set it for like 78-82 personally I'd run 82 but you can always start lower and inch em up. Sorry I didn't catch that you had one, I'm always editing my post for spelling mistakes lol.
Yeah it’s just a little 200watt MyHeat or whatever. Would have a bigger unit plugged directly to outlet and Hope it has a thermostat on it already.
A heater on low power heats the tent surprisingly well at least a 5x5 I run the heater with the temp of the canopy and not the machine itself thats tucked away in the corner so the roots tend to stay cooler than the top of the canopy. Plus it saves a ton of power.