Really nice unit :up: but i have something to say: you said that you tested it on 225W load, how can you say that is tuned for really high loads 300W+ if you didn't try? We all know that from 225W to 300W+ is much difference... I think it will be the best if you make 300W load tester and you will see how hot is that and what temps cacade can hold. Try to make one with cartrige heater from 0 - 300W, it is wery simple.
http://ld-phasechange.com/images/load_tester/1.jpg
Best Regards
