I should be more specific when I say water heater I mean some sort of water heating element. lol. Damn me and my generalizations hehehe.
I am going to have a holding tank with i will say 20 gallons. The holding tank will have a water heater such as a fish tank heater but the one i am going to get is actually stronger (block heater for a truck) I will have my t-stat probe in the holding tank and the heater controlled by the t-stat. Then I will then have a 120 low pressure pump pumping the already warmed water through the tubes that I will route and back to the holding tank. This way I only have a low voltage pump and one heating element rather than alot of flexwatt.