12-26-2012, 05:52 PM
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You don't have to use Live Rock at all. Alot of people don't like it because of th hitchhickers that can come with it. You can use all dry rock if you want to. Need at least 200lbs in a 200g tank.
You'll have to take water samples in order for us to know if you can add a clean up crew yet. If your tank is still cycling, it would kill them. You want Ammonia and Nitrite at 0 and your Nitrates below 40, then your good to go.
Flow rate in a 200g for Fish Only tank your looking a 2000gph, or 2 1000gph powerheads, if your looking at getting corals your flow will go up to and beyond 4000gph. I have a 240g 8' long tank and use 2 3200gph powerheads. One on either end of the tank.
And finally, yes, you need to get a pump for the Ocean Clear Filter. Pump will sit in your sump, and pump the water through the filter, and back to the DT.