Especially those you didn't think you needed but can't live without? (I got a new Denali that just emailed me that my tire pressure was low - but I was thinking more fish related). My filtration is running well. Fish seem happy. My emergency backup is pretty poor. I have an apex lite. Was thinking about a water sensor that would shut off my pumps if there was a leak. Auto top offs are cool but I went with a constant drip instead.
