Without a doubt the best coral dip we have used to date! Bayer Advanced Complete Insect Killer is perfect for Red Bugs, Acropora Eating Flatworms, Montipora Eating Nudibranchs, Zoa Spiders, Zoa Nudibranchs, and many other pests! We suggest mixing your dip solution to a slight milky white appearance, and dipping corals for no more than 15 minutes. Use at least two clean water dips after your dip period. DO NOT ADD TO AQUARIUM SYSTEM, USE ONLY AS A DIP! Note: Pest eggs will not be affected by dips, and dipping more than once in a 1-2 week period may be needed for hatchlings.