New Member Here

Hello all. Just a little background about my journey so far...I became interested in this hobby kind of by accident. I strolled into a pet shop out of curosity one day and laid eyes on a Red Emperor Snapper. It was love at first sight and I dove into the world of saltwater to find out what I had to do to take my new found friend home.
Unfortunately I learned very quickly that I did not have the knowledge (or the space!) to care for my dream fish. So I have been researching saltwater tanks for a little over three years then (finally) this last Christmas got my first fish tank, a 55 bowfront.  I purchased all of my supplies online through petco.com and (so far) have 65 lbs of live rock and 60 lbs of sand. I have recently discovered that who ever told me saltwater was a lot of work did not stress IT'S A LOT OF WORK! So here's my dilemma...
My tank was all set up, doing well and then, without notice, I got promoted through work and thought I would be moving about an hour away. So I tore down my tank and put my rock into three large tupperware tubs with heaters, only to find out that the place I was supposed to move got rented out from under me. Since I wasn't able to find a different place to move, I decided to stay where I am and just commute to work. So a little over two weeks after I tore down my tank, I got to put it back together. It is back up and running now with stable water levels. I am worried about my rock though. When I received it from Petco, it had beautiful coloring (greens, yellows, and purple) but now it has very little coloring at all. Literally it looks like dry rock that I just threw in some water. And recently my three hermit crabs have all pasted away when before they had a good amount of algae to munch on.What could be wrong with my rock? Is there anything I can do to get some life back into it? Someone suggested Kent Marine Purple Tech to me, any suggestions?
Any advise would be greatly appreciated! Thank you in advance  HRLB