Best Conditions for Growing N. Rafflesiana

[CN]

Hi folks,
As some have read I have had some troubles growing Rafflesaina Here in Kansas , US. I have had 6 all have died not sure why wether it was soil over watering (highly doubt) or just poor quality plant . I have recently received two seed grown Raff's one i just sold the other seems to be doing ok those two have been growing in a fish tank now for well since April an Havent really moved in growth . but , the funny thing is I have one other that is a TC Raff an it is in My H/L grow Chamber an it is the one that has taken off .
It is in the same media as the others same amount of air movement humidity in the H/L chamber is 10to 20 % lower then the L/L tank.They are pretty close to the same distance away from the lights .
I havent realy fully watered my plants in about amonth due to i mist them religously so media is damp but not soaked . Hope that makes sense ...lol
Any how hope you all Low Landers can throw a life raft out an help safe these lil guy's . Because these are supposed to be easy ....lol

Daren