Well, four days after my last post and the two girls are growing ... but, I must admit, they do not look half as perky as my last two grows... herbie says it's the heat...and many of the leaves are dry to the touch...and yellow spotting and leaf-tip burn continues to plague them....but...

....there's been a serious cold snap where i live ... the girls are growing in my cold attic (albeit in a self-enclosed light proof box with intake and outtake fans)...and my friendly hydro salesman suggested i use an aquarium heater to get the water up to about 24 C. Indoor temps are about 28 C. Does this sound alright to all of you out there? Lamp is 250 HPS, about 10 or so inches from tops of plants.

all best and thanks,
jash