Chondrus crispus - green spots
Hello. One week ago I collected some Chondrus crispus algae at the see. I then put them in a see-water tank (I obviously controlled temperature, salinity and pH, to create similar conditions). Some days ago, some of them started to develop green spots at the ends of their thallus. Those spots are getting bigger and bigger and the tissue feels slimy and is very fragile (if you touch it, it almost instantly falls apart). Does anyone have an idea what the problem might be? I would very much appreciate your inputs!!