Are Water Changes Worth It? A Hammer Solution to Aquarium Water Quality, but Dilution Works

What's the role of water changes in our reef tanks if our filtration is so advanced? Do we need water changes? Can water changes even aid in our nitrate and phosphate control approach?

Water changes are more than just nutrient control. They are a buffer for all sorts of tank pollutants and toxins. If there is one insurance policy to help your tank get past your human nature to forget or lose track of the "best" practices, water changes are the key.