Its a tough call,
, I like them both, but I think I will leave the 20ks in for the 2 weeks or so, so they burn in , I run them 2hrs a day now, will increase them slowly, I have no SPS yet, so its tough to say, the Zoos, Shrooms brains and anemones love the light, some of my big leathers close a little with the MH then open and are happy with the VHO,Rock looks better with 20k, looks bleached with 10k, fish colors? Jury is still out