Red hooks will develop irregular spots of red and black when they're ready to spawn, look downright diseased compared to their usual silver display.
Jager is pretty solid. All heaters fail at some point. I'm a fan of using a heater that isn't over sized, or two smaller heaters hooked to a controller.
i need a heater to heat my:5 gallon,10 gallon.another 10 gallon,20 gallon,and my 29 gallon.my temp is naturally around 74.i want 1 type of filter that