i agree about temp consistency but how do you lads achieve it, I have a brew heater, it’s similar to a fish tank heater,I am up on the borders, and the temp is up and down like a brides knighty, also how do think barometric pressure affects it, or even if you agree it does,
easiest way is to set up a fridge with a small tube heater and a temperature controller. very easy and works a treat. have a look on youtube for vids.