i traveled for 4 days, and my little brother helped me out with my aquarium but when i came back something was going on with my bubble coral, what should i do ?
hope anyone can tell me whats going on? or how can i stop this? the rest of my corals are doing pretty well (lobophyllia, frogspawns, torch, green star polyp, green ricordea, red mushroom, goniopora, the fungia came 3 weeks ago with some white parts but its recovering)



hope anyone can tell me whats going on? or how can i stop this? the rest of my corals are doing pretty well (lobophyllia, frogspawns, torch, green star polyp, green ricordea, red mushroom, goniopora, the fungia came 3 weeks ago with some white parts but its recovering)