Anyone familiar with this plant? My Betta loved sleeping on it but I’ve had it for a little over a week and now it’s sinking to the bottom! It’s still green but is it dying? I just got a liquid fertilizer. Also I have an adjustable light with low tech light, should I set the light at 100 percent or can I get away with less? Embers and Bettas don’t like a lot of light so I have it set high for 6 hours then lower for rest of the day.