I have 4 Clones that are starting to look a little droopy. I guess i need some lights like this http://www.humboldthydroponics.com/...+Lights&sc=Flourescent+Lamps&sc2=&id=1403&uid= Is that the bulb I need for 4 clones? Or something like it? Also, do I need a heater for the room if the temperature drops to close to freezing each night outside? And if so, how many hours a day do my clones need light?.