at the moment ive got about 3.8W a gallon an will probly make it close to 5Ws in a week or two. would that figure fall but, depending on the distance between the light and the anenome ? ? ? i have a distance of about 20cm between the lights an where the anenome would sit on my LR. from wat i worked out its the same no matter where in ur tank, an that doesnt seem right how many watts is ur average hallide ??