Hi
@jamesb07 To echo others, keep your CBB fed so it doesn't get into the habit of not eating at all. Blackworms are expensive these days, so instead be sure to keep offering mysis. I like PE mysis as I feel Piscine's collection location & methods are the best, and here is some info in top 10 format:
Also, transitioning your CBB out of the bare tank and into your real aquarium, something with rocks where you can have pods and other things for your CBB to graze upon may also help with diversifying.
I feed my aquariums 2x daily and each feeding for each tank includes at least 1 full PE Mysis cube because my CBBs need fed, but everything else loves to eat those PE mysis as well. Both my CBBs are under 2 years old, but since they were not compatible, one went to my 'CBB sanctuary tank' of 60 gallons and the other into my mixed reef 180 gallons. At the time, both were the same size: both too thin and both same heights, but as they've aged, my CBB in my 180 tank is noticeably larger these days than my CBB in my 60 gallon tank, though both are equally thick. Every couple of months or so, I add additional copepods to both tanks, and about annually I come across amphipods for sale that I add to my tanks' sumps. The 180 has been up for more years overall, has many more rock crevices for pods to hide and reproduce, and I believe it is the overall pod difference that has helped my one CBB become so much larger than the other, as well as the 180 used to have an aiptasia problem), as both tanks are being fed similarly for each tank's other occupants. My 180 also has a planted refugium which I think contributes to the pod lifecycle continuum. Earlier this week I removed some algae and about 18-20 adult amphipods marched down the corner out of that area, shocking me so many had been clustered underneath (found another 3-4 in the algae and put those back in the tank before tossing out the excess algae). I also think my CBB in the 180 rests more than my CBB in the 60, for whatever reasons. Like
@Glenner’sreef CBB, my CBB in the 60 gallon is always poking around, no matter the time of day or night.
There are additional times of day some days when I'll drop extra food leftover from my suncoral food baths into tanks (optional third feeding), and my hope is over time getting exposure to a feeding that entirely lacks mysis but is all seafood proteins (clam, shrimp, etc), perhaps my CBBs will develop a taste for something beyond mysis.
Glad your CBB is eating for you and good luck with getting it to keep eating and thrive!! Keep us posted