The fish you added,are not hardy for a new tank. Basically that's what you have. You also added way to many at one time. The goby is a sand sifter,you have very little to no fauna in your sand bed to eat. Never add 2 grammas to a small tank. They will fight. A flame is a hard fish to keep even...
Any pair fish should be added together. As long as the tank is big enough to house them. Clowns are commonly added as a pair. The one exception is maroons,and tomatoes they are difficult to pair
Geridoc makes an excellent point. By good live rock, it's loaded with alage, critters,ect. Generally this isn't what you would get shipped due to die off. I have a lfs an hr away that I go to just for its quality rock. However a 5lb piece would seed the rest of your dry rock
Same type of rock as live rock minus the life. Live rock is called such, bc of all the stuff growing and living in/on it. Dry rock just doesn't have any life on it. But will once in a tank. Especially when added with a few lbs of live rock. The stuff spreads to the "dry" rock
Tanked are a bunch of idiots!!!!!. Don't use your old sand. There is more in it then you would believe. Live rock is not Necessary, but it is extremely helpful. If the cost is the issue a lot of folks use a majority of dry rock and seed it w a piece of live rock
Majority of my food is frozen as well. Sprirulia brine, mysis, prawns,mega marine, krill,cyclopese, and alage sheets. I feed usually during the week over a 4-5 hr span. Weekends and days off throughout the day
Wrasse, and hawks are all fish dependant lol. Meaning it seems to come down to each particular fishes personality. My six line was a well behaved wrasse. Others say there nasty. My pygmy hawk was very well behaved. Now my only semi aggressive purple pseudo is nasty as hell.
Its just odd to me that a 6 line could/ would kill 2 tangs. Imforbis is correct add the most docile fish first, but w a tang and a wrasse honestly I'd add the tang last in most cases.
I'am a tang guy, so don't get me wrong but the only fish I've ever seen bully a tang is another tang.