So I got a red lotus at a LFS a couple of weeks back and it still hasnt sent any leaves towards the surface infact it really hasn't sent anything up at all in terms of new leaves....
I have 40W temp is 84*
I've got two lotuses in my 75, neither have sent any leaves to the surface in the month that I've had them. At the same time I got an unidentified lily thing (no idea what the names of all these are, they were free) and it has sent 5 leaves to the surface, and they grow extremely fast.
How big is your tank? If that's a 4 foot fluorescent bulb you probably don't have enough light.
If you have enough light then it is just a matter of time before that thing explodes, mine would take over my 150 in about two months (before I put more herbivores in my tank).
I got 2 bulbs and I got about 6-7 plants off those bulbs and more are growing in. Mine have not grown enough to send lily pad shoots to the surface, but if/when that happens I am cutting it. I don't have the room for it, plus it will block light to my other plants.