Hello all, First time poster, but a long time reader and like to say thanks as this forum has helped me overcome some noobie hurdles. So without further patronizing the members here let's get to it. I'm moving up in scale as my 90g has reached its goal of getting myself more acquainted with reef keeping. The test of can I do this successfully is complete and I feel I'm ready to move up in scale. However this move brings along with it some advice from those of you on this forum. 1.) Can I use my existing water in my 90g and transport livestock in my 190g so as to not go through the cycle period. I figured as long as I move all my rock which is already filtering It should be as If I did a huge water change. I will say that I'm not 100% sure I can, and am moving forward as if I need to cycle the new tank before transfer. That method would certainly cut down the time to get the 190g up and running, I made the mistake of telling my fish they have a new home and they haven't stopped asking me for updates. I prefer the cycle method as it will allow me to aquascape the new tank more creatively. 2.) To dose or not to dose, or should I just react. a. In my current 90g I really don't have any issues with my parameters fluctuating the only parameter which fights me constantly is my PH it never seems stable. It has dipped into the 7's at one point but I usually hover @ 8.1-8.0 (not my ideal range and want this to get better) with frequent supplements of a PH buffer (aquavitro). b. Given my parameters are where they are I don't see a need to get a dosing or reactor system but I would like to start populating the new tank with more coral than I have in my 90. So I'd like to think ahead and purchase either setup now rather than later. I'm configuring my sump room to accommodate both systems. Just don't know which would be the right system. c. What's the best way to fight this PH battle? And what would cause the PH to fall as it does from 8.2 water just mixed to 8.0 after being in the system just after a few days? What am I missing? 3.) I'd like to start knowing how to frag, or at the very least know what to do with frags purchased as it seems overwhelming to me, do I take them off their thrones when I introduce them in my tank? Do i leave them on their thrones and allow them to grow? I currently just buy coral on their rocks from the LFS and never deal with frags as I'm not sure what to do, but would like to start as I feel it's more rewarding to see the smallest colony grow into something bigger. Any links or advice is greatly appreciated. Thanks, and when the new tank arrives I'll start a new tank thread for those who wish to follow along in the process.