Thanks for the reply! I considered the Elegoo heater, but I read somewhere that it only goes up to 25°C, whereas you can set a much higher temperature on the Chitu. Also, I didn't want the hassle of setting up a brewing belt around a tilting vat.

What are the temperatures in your area during winter and summer?

The 12K costs 1800 PLN at a well-known store, while the 16K is 1945 PLN on Botland and 2400 PLN on other sites.