Remora is hang on the back. However, on my Solana, there is a sump, so it would have HOB and sit the sump. Not sure, for your tank.One thing about Remora, is I found it work best, to buy the largest pump for it's recommended size, that way, performance is very nice.
Just remember, that people rave about this skimmer and also think it sucks. However, everyone loves their tech support and skimmer quality. What they complain about, is the "sucking sound" and for some people they feel that it does not pull in more skim.
As I said, I have both, and they both pull in well, but I would have to say, that the Tunze 9002 would pull in more. However, comparing the futzing, there is no comparison. Set and forget for Remora ( I take that back, there is not even setting(. It's just plugging in and it works after it's broken in. No futzing at all...
Don't knock, never having to adjust, except for the skimmer cup, height which is a breeze.