When I lived in Tennesse my pothos really looked spectacular, but it doesn't seem to like my dryer weather here. I have killed many of them, mostly because if they have spider mites, I throw them outside to fend for themselves. Pothos, roses, and ivy are the three worst plants for spider mites. Anyway, I used to take a few cuttings and just throw them in my fish tank. They are a natural water purifier. They would eventually root in the gravel and push up out of the water. Pothos does fine in water. If you have some pretty colored bottles, try rooting some in them. Pothos is one of my favorite plants to grow in old wine bottles. The colored glass tends to curb the growth of algae. Put a few bits of aquarium charcoal in the bottle to help keep the water sweet, and lookout, because soon you'll have lots of the stuff everywhere. One of my favorite Mexican restaurants has a lattice above the cook's station and there must be 100 feet of Pothos weaved through it.

I've never noticed mine doing that, but I have seen mine releasing drops of moisture from guttation when very well watered. I would imagine that your plant must be releasing excess moisture from its leaves and something about the environment is making that moisture evaporate readily rather than forming droplets the way mine does.

Glad to hear that it's greening up. I've been using ES for several years but started using Cal-Mag Plus last year and really like it. I also started with a product called Protekt which is a silica based additive that helps strengthen the cell walls and make plants less susceptible to damage from sucking insects. When you see foliage like that suddenly appear during the growing season when the plant is fully leafed out and has been getting regular feedings then I would think a mosaic virus is more likely. A mosaic virus won't kill your plant but it's contagious and makes the foliage unsightly.

Looked healthy to me too and the pot has holes. We have to remember that just like us no plant is perfect. I always find a torn or deformed leaf on my plants. Especially after watering day.