I have an established 50 gal reef that’s approximately 5 years old. I have roughly 35-40lbs of Rock now in the tank(5 yes old also). One of my structures is a huge solid rock (10-15lbs) that I want to remove an replace with 15-20 lbs of dry reef saver(more surface area, an I want more caves an area for coral). My question is how do I go about swapping the rock without “crashing” “ an not starting a cycling with what I have done already. Thank you everyone


