It looks like after putting in a bunch of toadstools / leather corals that shed, the anemones are not very happy. Most of em are walkin around and are pretty small compared to before.
turning off the lunar settings worked for me. (the setting that changes the intensity of the blues in your tank based on what phase of the lunar cycle we are on)
In my 15 gallon tank, I feed my fis
Your fish will be fine. The fish in my 15 gallon gets fed every 3/4 days and the smallest clownfish in my main tank might not eat for an entire week.
As far as im aware, leds are rated to last for about 50,000 hours so LED lights should last around 10 ish years. The old AIs mentioned they would last over 13 with a 10 hour photoperiod...
The thing around the pipe is just some pipe insulation. When I first got the tank, I had the same noise issue so I tried a bunch of things to make it more quiet.