It probably won't be possible to run the new filter on the cycled tank, as it is an Eclipse setup that integrates the filter into the hood. If your existing tank has just recently cycled, I would wait another couple weeks to remove any filter media. Floating the new Biowheel in the cycled tank will work fine, just leave it in there for a week IMO
. I've started quite a few tanks this way and I can tell you that it won't be an instant cycle, but an abbreviated one. In order to start up the new tank at your office, make sure you will have time to test the water every day until the tank cycles, and be prepared to do a pwc
or 2. The tank will cycle in a few days, but until it does you may see an ammonia or nitrite spike (I had a small nitrite spike the last time I did this, but it was easily kept under control). When you add the Biowheel you floated in your established tank into the office tank, be sure to add a food source for the bacteria immediately- either start stocking very slowly or add pure ammonia to the tank. When I did this I went ahead and added a small bioload without any problems.