make sure they have nothing to feed on
they're ok to add, but your manual removal is what keeps the cells from dividing--we run a couple of hand guides after the initial cleaning to truly see if the invader rebounds equally or trails off, lacking feed
its a total change of reefing approach to the norms where the invader is literally left in place
vs removing it now that the tank is pretty clean, as hand guiding. like a garden with a few dandelions left, we just pull the dandelions from the root.
The cuc can eat what you feed for the fish etc, but make sure you don't leave the invader in the tank. Its rare to have total growback to original mass even in one week, Im thinking the growback is small, easily accessed do u have a pic
if your sourcewater is testing 0/0 that's good to eliminate that variable yes agreed. lighting intensity reduction and blue is safe for sure, even a healthy reef can tolerate that minor change as overcast conditions on the real reef might cause at times
If we search out rock curing threads, where bare rock is brought up to live rock purple quality, these associates aren't unusual they're expected and that dry rock really could be feeding them for just a while.
Id prefer your invasion to just about any other, its easy to guide out with just a few rounds, the rest don't even have to be deep cleans just topical work
lets see pics to compare to the first