I am looking to go all electric on my next HLT which will be 55 gallon SS. Does anyone have an formula for calculating the watts needed to heat this volume of water? I will not be boiling just heating to mash and sparge temp. Based on what I have read on the forum, it looks as though I will need 2-5500 watt Camco Low density elements but this may make the automation of the system more difficult? Any ideas?