Water circulation? Advice, please...
I have a 29-gallon reef tank, with a filter that is rated for a 50-gallon tank. I have some corals in the tank, which seem to be doing ok so far, but they have only been in for a couple of weeks. My understanding is that the corals I have don't require a particularly high level of water circulation. So, my question is: Will my filter provide sufficient water circulation over the long term, or do I need to get a power head?