These dual spectrum ones are pretty good. I have 1 of these 125w http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=270757018490 - Also got a 125w and a 150w Warm and a 300w Cool :) It shouldnt be a problem using the Dual Spec throughout the whole grow. But as a rule the cool is mainly for...