So I bought an Apexel last week to control my brs titanium heater as well. The apex seem to keep temp rock solid. Then I found out it’s not good to have apex control it as it will kill the outlet from on off cycle. I was doing 1degree swing and outlet was switching around every hour. So I got the ink bird yesterday and well to start it was 2.5degree off I had to adjust it. Now looking at my graph it kinda isn’t anywhere near as good at keeping it in the 77-78 like my apex did. As you can see in pics apex was within .1 degree on temps. The inkbird is all over. I am sure it’s not a big deal in reality to the tank but bummed it’s accuracy sucks. It’s the new aquarium model as well.