I recently purchased some Amazon Frogbit from a member of this forum. It turned up in great condition but completely died within a couple of weeks of being put in my tank. I assumed it may have died off due to my filter which blew it all over the place but the guy I bought it from has informed me that his filters do the same to his Frogbit and it doesn't cause it to die. Does anyone have any ideas as to why this happened? I dosed the tank with ferts (just the mild, weekly stuff), and have 1 watt of light per gallon. The only other plants in the tank are a load of Anubias and Java Ferns tied to bogwood, and none of the fish messed with it.