Need Help choosing Skimmer for Cobalt C Vue 40 gallon tank

[ScottyD36]

So I recently purchased a Cobalt 40 gallon C Vue Tank. It arrived yesterday and my plan was to slowly do everything right. I have a 13.5 gallon Fluval that I rushed a little and was catching up on proper things like lighting/pump so on so forth. I am trying to currently decide on a skimmer for my C Vue. I am not sure if you are familiar with the C Vue but it has a lot of space in the back. Their is a 4.75 inch by 4.75 inch area in the back for a skimmer. I am trying to decide on a good solid skimmer for my tank. I have been looking at some that i think will go well but i am not sure how good they are. Also I wanted to get recommendation for skimmers I should look into. Currently this is the list of skimmer I have found that I think would be a good fit. Any advice would be greatly appreciated. Thanks in advance

TUNZE 9004 COMLINE DOC PROTEIN SKIMMER​

IceCap K2 50 Protein Skimmer
Fiji Cube Nano Protein Skimmer NSK-70

 

[Ron Reefman]

I have the Tunze in my 16g frag tank and I used it before that when the same tank was a Rock Flower Anemone breeding tank. It works well. The air valve control (pinching an airline with a thumbscrew) requires VERY small changes.

 

[SalineSerenity]

Hi Scotty. Which skimmer did you decide on? I have the C-VUE 26 that has the same overflow dimensions and was trying to decide what skimmer I needed when I came across your post.