So what I got so far:
Rimless Nano about 4.5gl. or so I think (10 X 10 X12high)
LED Lighting: 3w 27 bulb with 5 blue
And YOU guys

Now I live here in Hawaii on Oahu, so the first three questions I have a pretty simple.
Substrate: Can I use sand from the Beach? If so I was thinking a little on the courser side.
Hardscape: Lava rock should be easy to find on the Westside, would that be ok?
Water: There is a Salt Water source (faucet) down near the Coast Guard station; could I use that to mix with RO Water to achieve the Brackishness?
Thanks in advance for your comments and concerns... Here we go....Wheeeee