That is kinda cool. Hard to beat the Tunze 3155 but that one is interesting.
You are right, but my mixing station and RODI water is located in the garage, the Tunze is not up for the challenge.
I use a Tunze on my frag tank in my living room that's full of another member's coral that had their tank split and was on my 120 before that, they are great and have no complaints.