Oh , OK . Didn't know that.
However if i can find
Tunze 9010 i can sell you my Deltec MCE-600 , i have a sump now and can put a skimmer there.
Tunze is not HOB BTW its hang in the tank/sump (inside).
you can run it outside but you will need an extension tank with "U" tube and a power head.I think its called "Tunze skimmer extension" but i can be wrong.