My only two cents with nudibranches -in addition to what was mentioned above and experience with both -including a wrasse who had it in its mouth like a dog with a big bone - is that they are good for smaller aiptasia and not so effective on the bigger ones.
I temporarily had a filefish that...
I will add that I run at 77 as many calibration fluids such as PH or my hydrometer are stated at that temp. Not sure how much of a difference that makes in the scheme of things
The _6_3 is my system.,
Once you start typing in
If error
Then once you start typing Tri… (spelling & capitalization matters) the trident module should just pop up as an option - and you should be good to go.
This one covers any issue with trident:
If Error Trident_6_3 Then ON
I use the same code except swap out trident with apex for any apex issues such as disconnects and the same for the COR pump for any issues related to return pump.