In this picture you can see several of our famous reef janitors cruising around their tank. They are looking for any sign of algae, fish poop or flake food. I don't think they even calm down in the night hours. This is a four-year-old bulletproof reef tank and you can not find one speck of algae growing in it. When you call into our office and speak with our staff the more information you give them the better. They can select the perfect Reef Janitor mixture. We recommend at least one and half janitors per gallon of tank water. We have two different types of hermits and five different types of snails. It is important to mention which type of fish and starfish you have in your tank for some can eat these cute little janitors faster than you can possibly replenish them. Trigger fish are the worst :) All of the corals in this tank are many years old and many clone copies removed from the mother colony. These corals have lived with hermits for years. The green palythoia you see in the middle of the tank is being studied in the bio-medical research arena and can be very toxic if you cut it in the reef. Wash your hands after you propagate it. This animal grows very fast, multiplies on its own and loves to be fed. We have several strains and colors of this animal, many deep green and many deep red and one can see reefs in the wild covered with this animal. Once this animal is placed in your tank you will have to propagate or it will take over much of your tank by spreading and forming new polyps. The hermits are not dumb they are hoping to catch some of the food the palythoia has trapped. I do like to have soft corals in the same tank in with sps corals one just has to work a little harder making certain that each animal is being nice to its neighbor. Coral placement is also important as well. That is why we share so many pictures in hopes of showing how and where these animals reside. Do not be afraid to move animals around in your tank. It is also important to sneak a peak at your tank at night for some animals have long stinging tentacles and can really go unnoticed and can be so harmful. They also will not show their deadly sting during the day or when the lights are on.