This looks fine to me. I have my Anubias planted similarly. As long as the rhisome is open to the water, it will be fine.
Low to moderate light is fine. I have mine planted in a 55 G with no more than one 6500 K, 32 watt bulb.
Most aquatic plants need high levels of minerals in the water, so it's good to change half the tank water weekly to keep mineral levels high. I also dose a little micro nutrient liquid once a week.
"Fear not my child, just change the tank water."