I might have gone to public school, but I’m not an idiot. Day 1 of my 20G nano, I set the temp at 78 degrees & reading showed 80.6 after several hours so I thought ok, need to calibrate it. 6-7x later, I’ve yet to get lower than 86 degrees, what the heck am I doing wrong? I’ve watched 3-4 videos, read countless articles, I get it. But if the red arrow allows it move 8 degrees, my temperature setting is 78 but is reading 90, how am I supposed to move the red arrow to 90 if it’s already at the 8 degree max? I’ve included two pics for visuals.
I even tried from scratch, set the red arrow in the middle of the allowed 8 degree variance & blue dial at 78, temp measured 88 degrees in 1 gallon bucket. Ok, move the red arrow to 88 & reset dial for 78.. right? Wrong, the temp went to 90.
Seriously thinking of buying a new one & then returning this one as defective.
![C861A30D-B7DD-4CF1-AA13-66CD94C84A4C.jpeg C861A30D-B7DD-4CF1-AA13-66CD94C84A4C.jpeg](https://www.reef2reef.com/data/attachments/1381/1381026-7c1394da8486eadc7c5cab3cae1a15d0.jpg)
I even tried from scratch, set the red arrow in the middle of the allowed 8 degree variance & blue dial at 78, temp measured 88 degrees in 1 gallon bucket. Ok, move the red arrow to 88 & reset dial for 78.. right? Wrong, the temp went to 90.
Seriously thinking of buying a new one & then returning this one as defective.
![B19CA919-339A-4878-A30E-5683DB7614E0.jpeg B19CA919-339A-4878-A30E-5683DB7614E0.jpeg](https://www.reef2reef.com/data/attachments/1381/1381025-579ddbdfedbd8a91c2a9842f16ea7995.jpg)
![C861A30D-B7DD-4CF1-AA13-66CD94C84A4C.jpeg C861A30D-B7DD-4CF1-AA13-66CD94C84A4C.jpeg](https://www.reef2reef.com/data/attachments/1381/1381026-7c1394da8486eadc7c5cab3cae1a15d0.jpg)