Hang on skimmers

[reefgirl189]

There's plenty of great alternatives, and most other people on this site could recommend a few tried and tested ones to you.

I think it also comes down to price. You can spend $1000's on a fantastic skimmer or considerably less on an almost as good one.

If you're set on a hang-on model they generally are a little bit more expensive than their in sump versions.

If you've got no budget limit then your options are very open.