Looking for advice on heating tank with RKL

[tim the toolman]

You may need a second heater if your fighting to keep the temp up.
I am currently running 2 heaters off my RKL system. They both run off the same itemp system and it works great. Both in different plug ins as well.

I don't know if it will make a difference but I keep both my heaters in the sump. Just seems to me that sending the heated water into the tank will result in more equal distribution of the heat. Just my thought though, no real data to back that up.