lol I know Lotus
Idiot move, I know :P.
My rotala didn't really close up per say, its growth was very compact- short leaves and very short distance between them. Unless that's what you meant :P.
My BBA is dying off.... I dosed 1mL of N and 1mL of Flourish, after 8 hours of darkness (I turn on the lights for an hour or so in the morning to check on the fish and dose the tank). The BBA on my smaller piece of driftwood looks like it is dying... It used to sway in the current and it was about 1/4" long and thick, but now it is like someone took a lighter to it and melted the tips of the strands together. It doesn't sway anymore and it is less thick.
So I am thinking the dark mixed with a new CO2 bottle are the likely reason as to why it is dying. The fuzz algae all over the place hasn't made a change yet though :P.
EDIT: I am wrong about the BBA dying. Maybe it just shrivels up at night or something, but now, about 30 minutes after seeing it be 'dying' it is back to the state it was in yesterday.