I would drop the water level. You want the soil moist, but not to the point where water is visible at the top of the soil. I found that mold, algae, and other nasties take hold when there's that much water in there.
Also with the plastic wrap, I poked tons of holes with a toothpick in mine to allow for gas exchange without losing too much moisture. This way you don't really have to open the plastic wrap for gas exchange.
I would recommend CO2 after you've flooded the tank. While DHG can be grown in lower light and with liquid CO2, it doesn't look nearly as nice.
For filter recommendations, I would recommend a ZooMed 501. It's not too drastic in terms of flow and it won't take away from the sleek rimless look. You'll need to cut the spray bar a bit so it'll fit in the tank. To get extra fancy, you could track down a set of 9mm or 10mm lily pipes for it. I stuffed mine full with seachem matrix and a bag of purigen.
You can actually keep the light on longer than 12hrs if you dsm, but 12hrs isn't bad.
Misting at least once a day is a must. Just don't be too generous with misting lol. I went on a misting frenzy before that I had to stick a paper towel in to soak up the excess water.
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