So do you really have to manually do water changes to ALL 126 every week? Or is everything automatic?
Fair enough. You have more fish tanks (easily) than both of my LFS's combined lol.
Yes, some people are able to maintain numerous aquariums. Possibly because they don't work much, don't have any other hobbies or interests and have found efficient methods to maintain them.
My tanks receive a constant drip from large filtered holding tanks at the center of the hatchery. But, the gravel washing still has to be done manually. But, for me it's a Zen thing. The maintenance actually calms and centers things for me. It's time to think, not just work.