Update: got the background samples from Universal habitat. I am going with the marine background. The 480g is still sitting at the shop, patiently waiting its turn to be buffed and reinforced. I can't order the background until I build an overflow. So while I wait, I am going to build my wet/dry sump, install the whole house water filter, and drip/drain systems. Also, the driftwood is still afloat, lol