Im new to to aqua vivaria. I have fully submerged pothos, along with some amozon swords and hornwort, and since I have switched to a primarily plant oriented tank they are doing pretty good. For now, I have the fizz factoryand 2wpg of light ( Iwill be upgrading when funds allow). Has anyone had success or miserrable failure with Pothos? How much light would be ideal? do they do anything bad to the water quality?