Tank Set Up Questions!!!

[idtce]

OK so I am new to this salt water thing. I think at the current moment I have jumped the gun a bit.
My situation:
28 gal bow front
100 watt heater
backpack style filter (at the moment)
3-4 inches of sand
20 pounds of rock
1.023 gravity
On its way:
I have a CPR backpack 2
a nifty looking power head (Hydor Koralia 1)
24 inch Current USA Nova Extreme 4x24W T5HO with 2 Lunar Lights
The tank has been up and running for almost a week.
Now here is where I jumped the gun, I put two false perculas in along with a gum drop goby. Everything is eating and looking good. What should I look for inorder to make sure everything maintains a long happy life.
Looking at buying some "Grung" from GARF.org, some snails/crabs and about 20lbs additional rock.
Thanks in advance...

 

[johnnyd]

check your ammonia my friend. ammonia that will fry your fish

 

[peef]

If your fish survive the cycle count yourself very lucky. Keep testing your water and do alot of water changes to help them along. Good luck!