Anyone got their hands on any Bitmain Hydros?

Really interested in all Bitmain models that have Hydro. What maintenance is required, it’s listed as dust proof so you don’t have to open the miners and clean them? I know it says warranty is voided if you don’t use the Bitmain shipping container but regardless if I had 5 Hydro machines what would be required to run it excluding electricity? Is it just normal water or distilled water or something, and is that connected to an external water source that keeps cycling the water? Sorry for all the questions but I find it really interesting. Many thanks!

Hydro models seem to be a money grab from bitmain in my opinion.

Nah not a cash grab