Don't over-stock it or jump on the "I'm going to change 60% a week for the hell of it" bandwagon, use pothos to consume nitrate to reduce the need for WCs, and start collecting rain water [if feasible] and the water bill shouldn't be too bad I imagine (although I have no idea what you pay for water in Canada...). I was worried about the water consumption of the big tank I'm planning (which may end up being more like 2000L than the 1750L it says in my sig depending on what glass the tank maker can get) as we're rural and rely on rain water for everything, I intend to do all of the above to try to minimise the amount of water I go thru every week. I'd expect the electricity bill from the pumps and heating to be more of a concern than the water though.I would love to have something like this, however the cost of water/hydro kinda scares me a little.
+1Amazing build. What are you thinking about the ultima 6000 so far? Some updated videos would be nice too