First off I never liked the idea of the Naso Tang. I would suggest going with a smaller tang like a chevron, sailfin or kole eye tang. That having been said. Niger Triggers and Lionfish get along fine. Go into any of the LFS and you will find that most of the tanks that house lionfish may also have a trigger with them. Third the bio load you are talking about is HUGE. I know I did it for 4 years. The trick to sustaining this was massive filtering. I had enough filtration to cover most peoples 180 gallon tank. This tank was diliberately overcrowded. At it's conception. (after cycling and time elapsed between adding tank mates) It housed 1 Niger Trigger, 1 Panther Grouper, 1 Black Voliton Lion, 2 snowflake eels, and a yellow tang. When the tank was finally shut down and turned into a reef tank(4 years later) It was home to The same Niger Trigger, The same Panther grouper, THe same Lionfish, The same 2 Snowflake eels, and different grouper. I actually got more back in instore credit then I spent on buying the fish in the first place. When I saw them added to the display tanks at the LFS I realized my fish were a far superior quality in size and color and health then anything they had for sale at the time. Fourth I varried the diet of these fish. I had a 29 gallon aquarium that was bare of decor or gravel. I filled it with mollies, platties, guppies, goldfish, ghost shrimp, and anything else the LFS would sell in bulk. This tank was essentially death row. Fifth, Kent marine is HORRIBLE! The marine biologist who runs the LFS next to your house will agree with this statement and can give you a GIANT list of reasons why? What sense does it make to add a suppliment to a live fish 24 hours before it's death. Anyone who has fought off an aquarium illness can tell you that 24 hrs will change a fishes diety habits and therefore the nutritional value of that fish by Nothing. That's just simple science and biology. Adding this to feeder guppies or anything else alive is a pleseboe. Finally if you decide these fish have outgrow your tank or simply that you want to switch to a reef tank. ALL of your LFS will take your fish. I know I've talked to them. The joy of living in Dallas.