Hi all, I have a 20 gallon station I keep in my garage with a pump and heater that I generally keep 50-75% full, for water changes. With the temperatures in NJ in the mid 20's I'm having a difficult time keeping the temp above 70, even with a heater rated for 2x the water volume. Do I need a more powerful heater, or is there something else I should be doing to maintain the temp? Thanks in advance!