Not a new Q, most probs been answered before Are 21W LEDS any good? I have about 30 0dd LEDS combined with 2x 20w t5s, and would like to know if the leds are worth the space. I have loads of LED strips! If they are any good I would like to remove the t5s and replace with about 100 LEDS. Any advice from peeps that use LEDS would be appreciated.