Quote Originally Posted by Tom@HaslettMI View Post
I prefer the 20L myself. I had a 20H on my 50 breeder and when a seam started leaking I replaced it with a 20L. The long was easier to work in (shorter), and with a bigger footprint the refugium section could be bigger while still fitting the skimmer and return pump. On the flip side the 20H was much easier to get in (and out) of the stand. The long barely squeezed in there.

HTH,
Tom
This is exactly my concern. I'll be using a Bubble Magus NAC5e Skimmer on this sump, which is an HOB skimmer, so the 20H may simply have to work for me at least for the short term. I could still have a decent sized refugium in the 20H considering my skimmer chamber could be smaller. Ultimately, an upgraded skimmer would dictate the need for a 20L.