First, even with a brand new tank, it's best if you give it a thorough wash. Don't use soap, though, as it can leave behind deposits which will be bad for upcoming inhabitants. This rule pertains as well to all equipment, tools, and any other items meant for the inside of the tank. Should anything call for more cleaning than what just water can offer, vinegar works quite well. Just be sure it's been fully rinsed away when you are finished.
This is likewise a great time to test the tank for any leaks. Brand new aquariums almost never leak, nevertheless it's always better to be safe than sorry! To begin look for a suitable spot to temporarily fill the aquarium. Much like the final location of the tank, this must be a flat, level, smooth, and stable surface. Be sure your entire lower edge of the aquarium is in contact with the surface. Ideally it will be in an area that, if a problem end up being found, won't lead to an inside lake, like a garage or deck. Cautiously fill the tank while trying to avoid splashing. Even a tiny leak is a problem, but may not be instantly evident, therefore allow the aquarium sit for the day or so. No wet spots and you're all set!
It's time to get that tank on its stand and in place! A ruler or tape measure and a level will probably be beneficial in the course of setup. Having all of the equipment that's gonna run the tank close by is a great idea as well. Ensure the groung beneath the stand is clean prior to putting it in place. When it's pretty near the final location you can set the aquarium onto it. However, if you have a sump and it doesn't fit through the door on the stand be sure to drop it in the stand first. Align the aquarium's perimeter with the perimeter of the stand as best you are able to. You'll need the tank to be at least far enough from the wall that you can easily get your arm behind it, around six inches is generally adequate. Moreover, you'll need adequate room for any equipment that has to hang off the rear of the tank, like the filtration system. Place all filters as well as other large equipment on the back of the tank to make certain they will fit. It is now time to get the stand and by proxy the tank perfectly aligned with the wall which is where the measuring tape comes in. Measure out from the wall on either end of the stand and nudge the stand closer or further away until the measurements match. Even though the ground ought to be level, it's still a good idea to check the top of the aquarium once it's in place. Take your time with this. Moving an aquarium once it's full is ten times as much work!