I bought a 58 gallon tank today for my other baby bimac to move into in a few weeks or so, and had it delivered by the same guy who set up my 75 gallon for me several months ago (and that tank has been great.) To start this 58 gallon tank, I pulled out 15 gallons of cycled water from my 75 gallon tank, and of course, intended to fill the rest with new water, and I have an R/O filter so I make it myself...But when I walked into the room and saw that he had the garden hose going through my window filling the remaining 40 or so gallons with that water, I was not happy. I never dreamed he would do such a thing, since he brought 50 gallons of R/O water to my house the first time to fill up my 75 gallon tank (at least I assume it was- he said so, and it was in 5 gallon jugs and that tank has been great for almost a year now.) He assured me that this would be okay, even though I told him that octopuses need extremely great water quality and if I had known he was going to do that, I would've stopped him. He put some primer stuff in it, and kept trying to tell me how it's not an exact science, and that he has done this for years and he has about ten aquariums currently, and he's had all sorts of critters- even sharks..meanwhile, I was just thinking "You can go now. I have to drain this tank as soon as you leave, and clean up this mistake." ....So, what should I do- is this really okay?? I'd feel better if I took about 40 gallons out and replaced it with R/O water mixed with some more cycled water I'll again pull from my other tanks. How long should I wait to transfer Booboo (my little mistake octo who was supposedly a pygmy from her 12 gallon into her larger home? Help!