Hi! I am a very varied nem feeder so I can give y’all some answers! Currently I own 4 DIFFERENT BTA (so I’m not counting clones/splits, these are all different colors and names).
I feed my RBTA every day a very large amount (as much as 2 percula clowns and a dwarf angel get). It developed HUGE bubbles and splits off 2 babies every 28 days or so, it is approximately 7-8”. Very stationary, has not moved in almost 1 yr.
My black widow I never feed. It has stayed very small and does not split often. The tentacles have shown very little/no bubbling and it moves locations often (every 3 days or so)
My CSB I feed 2-3 times a week, it has great bubbles and is a good grower (got it at 2” it is now 4-5” after 1 month). It has not split because I acquired it too recently and it is still too small. Wandered into a cave for a few days but came out. Has not moved since.
my POTO Sunset Strip I feed 2x a week. It came to me the size of a US quarter and now it is about 2 1/“-3” (recieved on 9/9/20). It is bubbling good but not great and obviously has not split. Has not moved from original spot.
all of these nems are in different tanks and are on separate systems. I feed them LRS nano reef frenzy frozen foods via aquarium tongs or my fingers depending on how deep they are in the tank. I am purposely feeding them different amounts as an experiment because I have heard different suggestions as well. Currently the results seem to be that feeding more often is the way to go