Did you cycle with fish or hit it with ammonia to start it off? How much did your alk drop? Did it drop in days or weeks?
Looks like the pros out way the cons for dry rock. Seems the cons are dealt with easy enough.
I cycled it with a piece of shrimp. I don't like to use live animals as the ammonia can be harsh on them. I let it cycle for a couple months. It doesn't take that long but I like to be sure. I didn't test parameters for a month so I'm not sure how quickly it soaked up the alk but 4 months in and the rock is still pulling out alkalinity but not as fast as it did before. I tested about month after adding the rock and the alk had dropped to 85 ppm or 4.76.
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