Not the way you have them. These are terrestrial plants; having them fully submerged will only make them rot and foul up your water. You have to keep the leaves and most of the stems above water for them to survive (e.g. in my pic, you can see that only the roots and about 3" of the stems of my pothos trail down into the water on the left side of the tank).From everything I've read it is a awesome plant to add to a setup for keeping nitrates and phosphates down.
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