Not to rag on you, but I have to disagree. At this point, now that there are corals in the tank, I wouldn't be going for the instant cycle. That's a surefire way to kill the corals. Adding bacteria can help speed things up, but do so slowly. I used Microbacter7 when I transferred my livestock to a new tank to help things along. While it did help shorten the cycle, it did also cause some issues and I lost a few huge, very helthy colonies that were a couple years old. Best advice I ever got in this hobby: Nothing good ever happens fast in marine tanks.

Also, he has a Kessil A350W LED over a 30g. You could BBQ your corals with that. I don't think too little lighting is the issue. Probably the opposite.

Just an idea but could there be any chemicals going into the system? It could be anything from the wrong type of silicone, copper meds used on an old tank to rusting shafts on pumps.

Good thought but everything seems alright. I am using just a regular gel superglue for some of the other corals in the tank, could that be it? Thats really all I can think of at this point. Does it seem weird that even when I attempt to direct feed them they dont take it?