I'm becomming the crank in the corner as far as this forum is concerned.........
Zebra moray - the rock needs to be arranged to provide him with a nice retreat.... and then stuck together using plenty of epoxy etc, because when big, these guys are easily as strong as your arm.....
Lionfish - in my view its a bad idea keeping a lionfish and a moray together - in all liklihood the moray will eventually swim into the lionfishes spines..... they are blind and go a bit nuts when food is added.... the lionfishes instinct when threated is to erect spines and stay still...... so in my view, I think you should pick one or the other.
Panther Grouper - too big and immensely ugly when mature..... I've seen these guys 30" plus...... even at 12-15" he would be horribly stunted and much too big for your tank - especailyl given the tankmates.
Kole tang - a bit small initially to be housed with the three previsouly mentioned species..... if you got a big one, and the others were small, it should be ok.
Huma trigger (a.k.a. Picasso) - nice fish - best choice on your list for a 150.
Your question - will you be overstocked - in my view yes. It will be biologically overstocked unless you invest heavily in massive amounts of filtration and do weekly 25%+ water cahgnes..... even then, you'd be looking a chucking in a cupful of meaty food on a weekly basis....... in my view, no way......
Equally as important, I just don't think these fish will physically fit into a 5' tank........ seriously.... before you add any rock..... the moray is gonna be about 3' long and a couple of inches girth.... the lionfish is gonna be like a 12" diameter ball with spines out, the panther grouper will big enough to make a decent meal for a large hungry man (go to the fish market and look at a 12-14" white snapper), the trigger will get as big as an average humans foot, and then little Kole tang swimming around in the middle...... now you've gotta build a mountain of rock for the moray to hide in..... I'm sorry, but no way is my honest opinion.
My advise / opinion would be to ditch the grouper and the lion, retain the moray, trigger and tang, and look to include something one other nice sized, colourful fish - like maybe a harlequin tusk, a navarchus angel, maybe another tang or something like that....... if you ditch the moray and keep the lion, then you might get away with two of these alternatives........
so for the negative reply, and as always, its just my opnion
