demosthenes
Active Member
No, not really. I saw another member do this, so I thought why not. Ok, for the real question. I am ordering a MH Retro for my 20G, but it comes with the 4000K bulb, but my question is, should I upgrade it to 12000K, it's the only other option, excluding 5500K, or should I wait, and buy a 20K, like planned. I want to save the money, but haven't had any experience with the 12000K bulbs, except hearing they don't last. Is there much, if any, difference between the two?