I just made a new rinse tank and I'm debating if i want to heat the water in the stainless tub. I could put heating elements in the tub, or run an instant hot pou unit or traditional hot water heater externally. Before I waste my time what do the veterans think about rinsing, is heat necessary, or does in really not make a difference. I can't really find anything out there or any film manufacturer recommendations. a lot of the chinese rinse units heat the water but not really any of the american made setups I've seen.