OK I need to make a heater choice. I bought 2 Eheim 250W heaters but had to send them back because they are to long for my trigger systems 36" Ruby sump. I have a 120 gallon dual overflow tank. The heaters will be placed in sump. Can anyone recommend another brand of heater with smaller footprint? Also if buying two heaters, 1 as a backup what size watts should each be?


