Yes, we can, but first we need to know more about your tank. Size, filtration and amount of LR or what ever esle you can tell us.
I'm thinking that your tank is at least a 55g. Before I say you need a skimmer, what do you want to keep in lit...fish, fish with LR (FWLR), or reef? If reef what kind of lights do you have? Also do you have a sump?
Ok cool thanks I will add that to the list of things I need, do you recommend any. I would like external not hang on and also how does it connect, are the external filter pipes split and this joined in between that or will it have 2 seperate tubes going to the tank.You dont have to have a protien skimmer. I recommend one as they are good for removing DOC`s from your tank. I know several folks that dont have one but the make it up in extra PWC`s.
Also moving this to the General hardware and equipment discussion forum.
Damm, I was hoping to find an external one that does not need a sump so I can save some space, looks like HOB is the way forward.As mentioned above you`ll need a sump if not a HOB. As far as brand name I believe Octopus brand is the best from what I`ve heard.