Founder Plans Event To Heat Hot Tub With AI GPU Waste Heat

alright you guys before it's the official post on this, i'm trying to magic together an event in about a week and a half. I'm trying to directly heat a hot tub with the waste heat from a local model. do any of my followers know / have opinions on anything like this? favorite liquid solutions? ideal is like an actual liquid cooled output rig with blackwell, but i don't know if i'm lucky enough to have a blackwell rig lying around.

otherwise, AIOs I can grab from central computer or amazon? or just the pumps? 3090s to 5090s with aftermarket liquid liquid cooling loops?

anybody shill me. ?