Setup

Doesn't seem like enough rock, you should use 1lb per gallon minimum I would think, a lot of people do 2 lbs per gallon. Other than that it sounds cool.

Fav reef fish is the mandarin dragonette, however I dont have one because you need a very established tank and lots of pods for them to eat.

I would have to agree. The setup sounds fine, other than needing a little more live rock you should be in pretty good shape. Just make sure the tank has cycled properly before adding anything expensive.

37lbs of rock in a 75 gallon tank is 1/2 pound rock per gallon, not 2 You should have 100-150 lbs rock for that tank (thats what I would do)

I'd skip the live sand and go to home depot or where ever and just get normal old run of the mill play sand. It will turn into live sand in short order and save you quite a bit of money. I'd also think twice about that many hermits they can be a real p.i.t.a. they tend to eat snails and each other or just rip another party out of their shell and take it as their own. Adding spare shells will help but not end the problem.
The live rock is another issue that really gives you the most options. You can add your 37 lbs cycle your tank and add the rest. You can add part of the l.r. and some coral rubble, or any other calcium carbonate rocks up to and including well cured special concrete blends and let it turn into l.r. When putting a tank through a cycle I like to add some primo l.r. after the cycle is done to increase your diversity of the small life.
My easiest reef fish have to be the cardinals because they are pretty cheap as s.w. fish and they are very hardy and can take a lot of newbie mistakes without much stress. They also tend to school are often times captive raised and aren't shy. They also don't tend to pick on anyone else and that's pretty important to me. My favorite well that's hard to say I like different fish for different reasons but, for this purpose I'll have to vote for the cardinals.
hth
Chris

I agree with the other posters. I originally thought 2x tank size for LR was excessive, but once I set it up, it was a drop in the bucket (so to speak). I have a 29g tank and ended up with 45 lbs of LR and could probably add more with no problem. The more the merrier, even though the stuff is expensive.

I'm wondering, however, why no one questioned your numbers of crabs and snails? Those numbers seem excessively high to me. I've read and been told that a ratio of about 1/3 of tank size in crabs and snails is best. So for your 75 gallon tank, that would about 25 crabs (both varieties) and 25 snails, plus or minus a couple of specialists like sand burrowing snails, cleaner shimp, etc.

Or, are my sources (here, reefcentral.com, LFS) wrong and I have too few snails and crabs in my own tank?

thanks,
bruce