I honestly bought the scallop with expectations of what Ive read, that 6 months max is the longest itd survive.
My tank is a mixed reef tank that is now 1 year old, got the electric flame scallop at month 4. The first 4 months I would target feed it phytofeast (about 5-10 ml) with all the pumps and skimmer off about 1-2 times a week. Plus I also fed heavily for my fish and was never aiming for a ultra low nutrient tank bc I only had one SPS (Acro).
The last 3 months Ive reduced my phytofeeding to once ever 2 weeks bc I'm now trying to start growing more SPS. The scallop has moved twice over the time ive had it. Initially i placed it in a crevice cave near the front with good flow for viewing.
Only thing I can tell is that the electronic shows are not as rhythmic and consistent, but it still flickers. Probably a sign its not as good in health as optimal, but good enough to survive?
I do also have a tisbe culture in another tank that i use to add pods once a week for my mandarin... maybe that helps too?