I shut down for about 4 years. I stuck all of my live rock, well over 100lbs, in a smaller frag tank and just ran a pump and salt water in it for the full 4 years. It was in my basement out of the way in a corner. I had a float valve hooked up for top off straight to the city water. I didn't have heat in it. Then after 4 years I set up my tank with that rock and it is still great. My current tank is a full blown sps tank with no issues at all and it's been running for 4.5 years now.
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