Small clams under 3” really need phytoplankton They struggleI've tried a derasas twice, like 1-2 inch ones, they both didn't last 2 months for me. Though the 3-4 inch maxima clam I have had from 2 cams ago is looking great.
Not sure if I got bad/sick clams like u mentioned here or they were just way to small and fragile. Maybe a slightly larger one would have done better