Maintenance has absolutely nothing to do with high PH, high TDS or high conductivity numbers.....
You say RO isn't necessary so prove me wrong. Find me someone up there keeping a monster 20+ incher in the liquid rock tap water that the north is known for. Rays are VERY resilient fish and I know guys up there and across seas that won't even put their liquid rock tap water in their tanks, but rather reconstituted RO or RO/tap mix.....
And Lix, ever thought that the big ones over there might be kept in water closer to their natural parameters (soft mineral free) then we provide and fed live food most of their life?
I think IF you were to dig deep enough into water chemistry I'd bet the high current you guys think they need has more to do with stuff like the water's oxygen content then simply something for the fish to swim in.......
Your in Iowa, you know nothing about Canadian water other than what you've been told or read. I have VERY soft water with a low mineral content, I have had tons of comments here on MFK reguarding the health of my Armatus(always say hes healthy and a perfect specimen, so RO water isnt necessary). I do agree with lix thinking they dont require as much current as most people think, but some of this does come down to the individual preference of the fish, not the species as a whole. I recently had my oldest/strongest powerhead die out on me, I havnt botherd to put the new one in as I noticed my armatus seemed to be a little more perky without it. Hes still a juvi though so I expect his temperament to change as he grows and his preference changes.
