keep an eye on ebay for a 3 phase imersian heater, they go cheap on there (most of them are bloody expensive new)just make sure you have enough oil flow to move the heat around
What's the blue pump do?It draws from above the heater and just goes back in the top.
Why not make 800 litres at one go, I have an 800 litre tank, no pump, but it was a processor,free if you can get it down to you. Terry
I've also got to keep it clean, which will be a challenge for me.
May I ask why you have to relocate Mark? or is it personal?