If you want a lush Anthurium balaoanum (or any other anthurium) with plenty of foliage, you should fertilize it with a nitrogen-rich fertilizer. You should also move your plant to a location with bright indirect light and water it regularly to encourage photosynthesis and healthy plant growth. Finally, keep your laceleaf plant in a warm spot where there aren’t sudden temperature swings that can stress out the plant. P.S. Do not over or underwater it; both conditions will lead to stunted growth, and the former can even cause root rot.