Thank you for that tip , I’ll make sure to always keep that in mind!!! What do you mean by “ crashed corals “?My current setup is too young to have anything really cool to speak of. I will say this, though…never try to alter or cater the flow of your aquarium to appease a particular/new coral. The exact opposite is true for successful tanks. Create a stable environment with multiple “flow zones”, and place the corals/inhabitants in their niche area. I crashed quite a few corals recently by breaking my own rule…never change the tank to suit a coral.