texasgiraffe
Welcome to the board !!
I keep a 30 gallon long.
Here's my suggestion - take it for what it's worth.
If your budget allows - I would strongly consider doing the following in a 30 gallon, no matter what you plan to keep in the tank.
Get some Southdown play sand if you can find it at Home Depot.
If not, buy some CaribSea Aragamax sugar sized oolite sand.
You can mix this with CaribSea Special Grade sand if you want.
75% oolite, 25% special grade.
For a 30 long - I'd get between at least 100-120 lbs.
Buy the 20 lbs of live sand from this site.
Buy the 20-25 lbs live rock from this site.
Mix up your salt with store bought RO Reverse Osmosis freshwater.
DO NOT USE TAP WATER !
Mix it all up in a new 30 gallon plastic rubbermaid container and let it aerate overnight with a powerhead ( you'll need one for the tank anyway, might as well get one now )
Maintain the water temperature at 78 F. Get a heater if you need one.
Set up your tank on stand.
Lay down the dry aragonite sandbed - 4 inches at least.
Make sure you aerated saltwater is to temperature, correct specific gravity, pH, etc.
Place a clean glass bowl on your sandbed.
Pour ( or pump ) the new saltwater into your tank - not all the way full, but just enough to fully wet the dry sandbed.
Pouring the saltwater into the bowl slowly will reduce the amount of sand that get's stirred up. The tankwater will still look cloudy - don't worry about it for now.
Take the live rock that you get from this site, and place it on the sandbed. Arrange it however you want for now - just get it in the tank, sort of stacking it up.
Open the live sand bag and pour it in over the dead ( now wet ) sandbed.
Once you get all the sand in the tank - slowly fill the tank with the rest of the saltwater.
Start up the filter you have, install a heater if necessary.
Maintain temperature at 78 F.
Place the powerhead in the tank, and plug it in.
That's pretty much all you must do for start up.
The tank will look all cloudy and may freak you out.
Don't worry about it - it will all clear up in a few days.
Sit back, let the tank cycle, don't be tempted to add any live animals to it, and be patient. I don't even light the tank much for the first few weeks, just when I want to look in and see what's happening. Act like you don't even have the tank, except for monitoring the tank for pH, ammonia, nitrite & nitrate.
You'll need a test kit. FasTest by Aquarium Systems work okay.
Salifert's even better.
Your tank will cycle with the live rock/live sand. This may take anywhere from a week or so to several weeks, depending on the quality of the live rock, amount of die off and so on.
This method is about the most sure fire, foolproof way to start up your saltwater tank. Other's may agree or disagree, but it's what I've done on several occasions - and it works like a charm.
If your budget does not allow for this - there are other ways.
In my opinion - this is the "best" way.