Originally Posted by promisetbg
Yellow tang & copperband butterflies get too big for a 75 gal.{the butterfly will also eat any feather dusters in the tank}
Longnose hawkfish will attack & eat inverts..particularly shrimp.
Flame angels can and most likely will eventually pick at your corals{better choice of an angel is in the Genicanthus family~Lamark's, watanabei, bellus, swallowtail
Brittle stars get huge & aggressive{a serpent star might make a better choice} If you do decide to get them, avoid the green=predatory.
Trochus grazers & nassarius are also great snails.
Add 2 Atlantic cucumbers to your clean-up crew to help shift the sand.
Avoid sandsifting stars,horsheshoe crabs, and sandsifting gobies.
A yellow watchman & pistol shrimp might be a consideration for your list.
Research Fridmani Psuedochromis instead of a purple, least aggressive.
Consider perhaps a red or purple firefish, bangaii cardinal, a yellowheaded jawfish, or a combtooth blenny such as a lawnmower instead of the larger fish.
I agree with almost everything except...
Brittle stars and serpent stars are the same thing. the difference is species, a serpent may be closer in relation to a brittle than it is another serpent. Only in this hobby is the distiction between seprent and brittle made. They are all brittle stars. their spine just lay different ways. most brittles (this includes serpents) are safe for your reef. And I wouldnt consider any to be aggressive except the green. the green while reef safe has a tendancy to prey on fish when hungry.