chickingirl19 asked:


I read that a good rule of thumb is watts for every gallon? I have a 29gallon aquarium, so 29-58 watts of light? I find that a huge difference. I also find it especially difficult to find a light with this wattage to be the correct size for my tank. It seems the higher the wattage, the longer the light. But if I go any smaller in size, the wattage is reduced. I also read that 2 fluorescent lights may be used, but my hood will only house one light. My plants require low-medium light, and low-medium growth rate, ph of 6.0-8.0, so they’re generally easy plants to look after. I am experienced keeping Angels, but I can’t seem to keep a plant alive! I am trying! There are HUGE benefits with plants and my Angels are happier. Every article I read about lighting for plants contradicts another article I read. One article says that the K rating means nothing, and another article’s author swears by using 5000-10000K lights. WHAT do I get? Help!
I mean 1-2 watts for every gallon!

Patrick asked:


I have a small cactus in a small pot on my desk at work. I am not near a window with sunlight. But, there are fluorescent lights everywhere that are always on. Will this lighting be sufficient for the cactus to live? If so, how often do I water it?
I want to emphasize there is no natural sunlight around my desk, only artificial light.