Yes, for 142g tank, te best fit is BM200.
Freds, BM200 for 100g is oversized, but there isn't anything smaller at this time. I had my generation 1 tuned down a little bit by my skimmer dealer as well as he tuned down his own display BM220 for his 100g reef. Once tuned down, it works great and consistently week after week. I'm sure that you may have seen one of the photos I posted on my skimmer dealer's BM200.