Ricordea Mushrooms are easy to maintain. Mushrooms, in general, are pretty hardy. Low to moderate water flow is preferred - they do not like heavy water movement. Ricordea mushrooms also prefer low to moderate light. We recommend 80-150 PAR. If your Ricordea gets too much light and/or water movement, it will just detach and float around the tank until it finds a more suitable home. Ricordea Mushrooms prefer attaching to rocks. They reproduce and spread relatively quickly, so many reef-keepers prefer to put them on their own rock separate from the main rock work.