I‘ve just started growing Pistia and something’s obviously wrong here.. I’ve looked it up online and it seems that there’s a lack of water vapour and nutrients... Thats the explaination for the yellowing and the margin curling(and drying) but I’m not able to find out what has happened to the leaves that have rotted. What am i doing wrong? Please help me. the plant is dying. The water pH is 6.5. There is abundant sunlight that falls on it for about 3 hrs directly. What should be done to save it!???