I have a DIY led fixture, I bought it off the sell forum and also received extra bulbs with it, first question would be the two bulbs at the end do nothing and I was told they are infrared bulbs and you just can't see them, is this true and what's the purpose? Next question would be can I add more led's to the same driver in circuit with the others without damaging anything and would it take power away from the rest making it be a completely useless in trying to achieve brighter light by doing so, your opinions would be greatly appreciated, they are 3w stevesleds if that matters, thanks.