I had a good-sized nudibranch apparently hitchhike on some LR
rock, and somehow he found his way into my sump. No idea how he go in there, all I have in the sump are little bits of rubble, chaeto (which has been in there for a long time) and crushed coral substrate.
He's a good-sized bugger (for never having seen him before 2 days ago), and even survived moving to another sump by somehow hiding out on my skimmer's pump, even though it was thoroughly rinsed off before going into the new sump. Very sneaky.
Anyway, I'm getting mixed opinions on it - keeping it or removing it.
What's everybody's opinion on keeping a critter like this?